# 100+ Percentage Questions and Answers with Explanation ( From Easy to Hard )

## 100+ Percentage Questions From Easy to Hard

1. What is 20% of 80?

Answer: To find 20% of 80, multiply 80 by 0.20.

Calculation: 80 * 0.20 = 16

2. If a shirt is originally priced at $50 and is on sale for 30% off, what is the sale price? Answer: To find the sale price, multiply the original price by (100% - discount percentage). Calculation:$50 * (100% - 30%)

= $50 * 70% =$35

Answer: $35 3. If an item originally cost$80 and is now discounted by 15%, what is the new price?

Answer: To find the new price, multiply the original price by (100% - discount percentage).

Calculation: $80 * (100% - 15%) =$80 * 85%

= $68 Answer:$68

4. What is the percentage increase from 40 to 60?

Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%.

Calculation: ((60 - 40) / 40) * 100%

= (20 / 40) * 100%

= 0.5 * 100%

= 50%

5. If a product's price increases by 25% and then decreases by 20%, what is the overall percentage change?

Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage.

Calculation: 25% - 20% = 5%

6. If a car's value depreciates by 10% each year, what will be its value after 5 years if the original price was $20,000? Answer: To find the value after depreciation, multiply the original price by (100% - depreciation percentage) raised to the power of the number of years. Calculation:$20,000 * (100% - 10%)^5

= $20,000 * 90%^5 =$20,000 * 0.9^5

≈ $12,192 Answer:$12,192

7. If 30% of the total population of a town is children, and the town has 10,000 people, how many are children?

Answer: To find the number of children, multiply the total population by the percentage of children.

Calculation: 10,000 * 30%

= 10,000 * 0.30

= 3,000

8. If 75% of a class of 40 students passed a test, how many students passed?

Answer: To find the number of students who passed, multiply the total number of students by the percentage who passed.

Calculation: 40 * 75% = 40 * 0.75 = 30

9. A company had a profit of $50,000, which was a 20% increase compared to the previous year. What was the profit last year? Answer: To find the profit last year, divide the current profit by (100% + percentage increase). Calculation:$50,000 / (100% + 20%)

= $50,000 / 120% =$41,667

Answer: $41,667 10. If a product is marked up by 40% and then discounted by 25%, what is the overall percentage change? Answer: To find the overall percentage change, subtract the discount percentage from the markup percentage. Calculation: 40% - 25% = 15% Answer: 15% 11. A store sells a product at a 35% markup. If the cost price is$80, what is the selling price?

Answer: To find the selling price, multiply the cost price by (100% + markup percentage).

Calculation: $80 * (100% + 35%) =$80 * 135% = $108 Answer:$108

12. If the value of a car depreciates by 15% each year, what will be its value after 3 years if the original value was $25,000? Answer: To find the value after depreciation, multiply the original value by (100% - depreciation percentage) raised to the power of the number of years. Calculation:$25,000 * (100% - 15%)^3

= $25,000 * 85%^3 ≈$15,763.75

Answer: $15,763.75 13. If a salary is increased by 8% and then decreased by 5%, what is the overall percentage change in salary? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 8% - 5% = 3% Answer: 3% 14. A company's stock price increased from$50 to $60. What is the percentage increase in the stock price? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((60 - 50) / 50) * 100% = (10 / 50) * 100% = 0.2 * 100% = 20% Answer: 20% 15. If a store offers a 20% discount on a$200 item, what is the discounted price?

Answer: To find the discounted price, multiply the original price by (100% - discount percentage).

Calculation: $200 * (100% - 20%) =$200 * 80%

= $160 Answer:$160

If a student scored 80% on a test, what is the fraction and decimal equivalent of the score? Answer: To find the fraction equivalent, divide the percentage score by 100% and simplify if possible. To find the decimal equivalent, divide the percentage score by 100%. Calculation: Fraction: 80% = 80/100 = 4/5 Decimal: 80% = 0.80 Answer: Fraction: 4/5, Decimal: 0.80

If an investment grew from $500 to$600, what is the percentage increase in value? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((600 - 500) / 500) * 100% = (100 / 500) * 100% = 0.2 * 100% = 20% Answer: 20%

A store has a 25% off sale. If an item is originally priced at $80, what is the sale price? Answer: To find the sale price, multiply the original price by (100% - discount percentage). Calculation:$80 * (100% - 25%) = $80 * 75% =$60 Answer: $60 If a company's revenue decreased by 12% this year and increased by 10% next year, what is the overall percentage change in revenue? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 10% - 12% = -2% Answer: -2% (The revenue decreased by 2%) If a restaurant bill is$80 and you want to leave a 15% tip, how much will the tip amount be? Answer: To find the tip amount, multiply the bill amount by the tip percentage. Calculation: $80 * 15% =$80 * 0.15 = $12 Answer:$12

The population of a city increased from 50,000 to 60,000 in five years. What is the percentage increase in population? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((60,000 - 50,000) / 50,000) * 100% = (10,000 / 50,000) * 100% = 0.2 * 100% = 20% Answer: 20%

If a store sells an item for $120, which includes a 20% profit, what is the cost price of the item? Answer: To find the cost price, divide the selling price by (100% + profit percentage). Calculation:$120 / (100% + 20%) = $120 / 120% =$100 Answer: $100 If an investment loses 30% of its value and then gains 40% of the reduced value, what is the overall percentage change? Answer: To find the overall percentage change, multiply the individual percentage changes. Calculation: (100% - 30%) * (100% + 40%) = 70% * 140% = 98% Answer: 98% (The investment decreases by 2%) A company spends$500 on advertising, which is 20% of its total budget. What is the company's total budget? Answer: To find the total budget, divide the advertising expenditure by the percentage spent on advertising and multiply by 100%. Calculation: ($500 / 20%) * 100% =$2,500 Answer: $2,500 If a product's price is increased by 10% and then decreased by 10%, what is the overall percentage change in price? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 10% - 10% = 0% Answer: 0% (There is no overall change in price) A store offers a discount of 25% on all items. If an item is priced at$80 after the discount, what was its original price? Answer: To find the original price, divide the discounted price by (100% - discount percentage). Calculation: $80 / (100% - 25%) =$80 / 75% = $106.67 (rounded to two decimal places) Answer:$106.67 (rounded)

If a company's expenses are $5,000 and it wants to increase its budget by 15%, what will be the new expense amount? Answer: To find the new expense amount, multiply the current expenses by (100% + percentage increase). Calculation:$5,000 * (100% + 15%) = $5,000 * 115% =$5,750 Answer: $5,750 The price of a stock increased from$50 to $60. By what percentage did it increase? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((60 - 50) / 50) * 100% = (10 / 50) * 100% = 0.2 * 100% = 20% Answer: 20% If a student answered 32 out of 40 questions correctly, what is the percentage score? Answer: To find the percentage score, divide the number of correct answers by the total number of questions and multiply by 100%. Calculation: (32 / 40) * 100% = 0.8 * 100% = 80% Answer: 80% A company's revenue decreased from$500,000 to $400,000. What is the percentage decrease in revenue? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((400,000 - 500,000) / 500,000) * 100% = (-100,000 / 500,000) * 100% = -20% Answer: -20% (The revenue decreased by 20%) If a product's price is increased by 10% and then increased by another 10%, what is the overall percentage change in price? Answer: To find the overall percentage change, add the increase percentages. Calculation: 10% + 10% = 20% Answer: 20% A store sells a shirt for$30, which is a 40% profit on the cost price. What is the cost price of the shirt? Answer: To find the cost price, divide the selling price by (100% + profit percentage). Calculation: $30 / (100% + 40%) =$30 / 140% = $21.43 (rounded to two decimal places) Answer:$21.43 (rounded)

If a car's fuel efficiency increases from 25 miles per gallon to 30 miles per gallon, what is the percentage increase in fuel efficiency? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((30 - 25) / 25) * 100% = (5 / 25) * 100% = 0.2 * 100% = 20% Answer: 20%

A store has a 15% off sale. If an item is originally priced at $120, what is the sale price? Answer: To find the sale price, multiply the original price by (100% - discount percentage). Calculation:$120 * (100% - 15%) = $120 * 85% =$102 Answer: $102 If a company's stock price decreased from$80 to $60, what is the percentage decrease in stock price? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((60 - 80) / 80) * 100% = (-20 / 80) * 100% = -0.25 * 100% = -25% Answer: -25% (The stock price decreased by 25%) If a salary is decreased by 10% and then increased by 20%, what is the overall percentage change in salary? Answer: To find the overall percentage change, add the decrease percentage and the increase percentage. Calculation: -10% + 20% = 10% Answer: 10% A company had a revenue of$500,000 last year and $600,000 this year. What is the percentage increase in revenue? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((600,000 - 500,000) / 500,000) * 100% = (100,000 / 500,000) * 100% = 0.2 * 100% = 20% Answer: 20% If a product is sold at a loss of 15% and the selling price is$85, what was the cost price? Answer: To find the cost price, divide the selling price by (100% - loss percentage). Calculation: $85 / (100% - 15%) =$85 / 85% = $100 Answer:$100

The value of a house increased from $200,000 to$250,000. What is the percentage increase in value? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((250,000 - 200,000) / 200,000) * 100% = (50,000 / 200,000) * 100% = 0.25 * 100% = 25% Answer: 25%

If a store offers a discount of 30% on all items, and a customer buys three items priced at $50 each, what is the total discount amount? Answer: To find the total discount amount, multiply the discount percentage by the total cost of the items. Calculation: 30% * ($50 * 3) = 30% * $150 =$45 Answer: $45 A store has a 20% off sale. If an item is originally priced at$75, what is the sale price? Answer: To find the sale price, multiply the original price by (100% - discount percentage). Calculation: $75 * (100% - 20%) =$75 * 80% = $60 Answer:$60

If a company's expenses increased from $10,000 to$12,000, what is the percentage increase in expenses? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((12,000 - 10,000) / 10,000) * 100% = (2,000 / 10,000) * 100% = 0.2 * 100% = 20% Answer: 20%

If a product's price is decreased by 25% and then increased by 20%, what is the overall percentage change in price? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: -25% + 20% = -5% Answer: -5% (The price decreased by 5%)

A company's profit margin is 15%. If its revenue is $500,000, what is the profit? Answer: To find the profit, multiply the revenue by the profit margin percentage. Calculation:$500,000 * 15% = $500,000 * 0.15 =$75,000 Answer: $75,000 If a product's price is increased by 20% and then decreased by 10%, what is the overall percentage change in price? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 20% - 10% = 10% Answer: 10% A company's stock price decreased from$100 to $80. By what percentage did it decrease? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((80 - 100) / 100) * 100% = (-20 / 100) * 100% = -0.2 * 100% = -20% Answer: -20% (The stock price decreased by 20%) If a student scored 90% on a test, what is the fraction and decimal equivalent of the score? Answer: To find the fraction equivalent, divide the percentage score by 100% and simplify if possible. To find the decimal equivalent, divide the percentage score by 100%. Calculation: Fraction: 90% = 90/100 = 9/10 Decimal: 90% = 0.90 Answer: Fraction: 9/10, Decimal: 0.90 If an investment grew from$1,000 to $1,500, what is the percentage increase in value? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((1,500 - 1,000) / 1,000) * 100% = (500 / 1,000) * 100% = 0.5 * 100% = 50% Answer: 50% A store offers a 25% discount on a$200 item. What is the discounted price? Answer: To find the discounted price, multiply the original price by (100% - discount percentage). Calculation: $200 * (100% - 25%) =$200 * 75% = $150 Answer:$150

If a student scored 80 marks out of 100 on a test, what is the percentage score? Answer: To find the percentage score, divide the marks obtained by the total marks and multiply by 100%. Calculation: (80 / 100) * 100% = 0.8 * 100% = 80% Answer: 80%

A company's revenue increased by 10% this year and then decreased by 5% next year. What is the overall percentage change in revenue? Answer: To find the overall percentage change, multiply the individual percentage changes. Calculation: (100% + 10%) * (100% - 5%) = 110% * 95% = 104.5% Answer: 104.5% (The revenue increased by 4.5%)

If a product is originally priced at $80 and it is discounted by 30%, what is the discounted price? Answer: To find the discounted price, multiply the original price by (100% - discount percentage). Calculation:$80 * (100% - 30%) = $80 * 70% =$56 Answer: $56 The price of a stock decreased from$50 to $40. By what percentage did it decrease? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((40 - 50) / 50) * 100% = (-10 / 50) * 100% = -0.2 * 100% = -20% Answer: -20% (The stock price decreased by 20%) If a company's expenses are$10,000 and it wants to decrease its budget by 12%, what will be the new expense amount? Answer: To find the new expense amount, multiply the current expenses by (100% - percentage decrease). Calculation: $10,000 * (100% - 12%) =$10,000 * 88% = $8,800 Answer:$8,800

If a product's price is increased by 15% and then decreased by 10%, what is the overall percentage change in price? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 15% - 10% = 5% Answer: 5%

A company had a profit of $20,000 last year and$25,000 this year. What is the percentage increase in profit? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((25,000 - 20,000) / 20,000) * 100% = (5,000 / 20,000) * 100% = 0.25 * 100% = 25% Answer: 25%

If a product's price is increased by 25% and then decreased by 15%, what is the overall percentage change in price? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 25% - 15% = 10% Answer: 10%

A store offers a discount of 20% on all items. If an item is priced at $100 after the discount, what was its original price? Answer: To find the original price, divide the discounted price by (100% - discount percentage). Calculation:$100 / (100% - 20%) = $100 / 80% =$125 Answer: $125 If a company's revenue increased from$1,000,000 to $1,200,000, what is the percentage increase in revenue? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((1,200,000 - 1,000,000) / 1,000,000) * 100% = (200,000 / 1,000,000) * 100% = 0.2 * 100% = 20% Answer: 20% If a car's fuel efficiency decreases from 30 miles per gallon to 25 miles per gallon, what is the percentage decrease in fuel efficiency? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((25 - 30) / 30) * 100% = (-5 / 30) * 100% = -0.1667 * 100% = -16.67% Answer: -16.67% (The fuel efficiency decreased by 16.67%) A store sells a shirt for$25, which is a 25% profit on the cost price. What is the cost price of the shirt? Answer: To find the cost price, divide the selling price by (100% + profit percentage). Calculation: $25 / (100% + 25%) =$25 / 125% = $20 Answer:$20

If a company's stock price increased from $100 to$120, what is the percentage increase in stock price? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((120 - 100) / 100) * 100% = (20 / 100) * 100% = 0.2 * 100% = 20% Answer: 20%

If a salary is increased by 8% and then decreased by 5%, what is the overall percentage change in salary? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 8% - 5% = 3% Answer: 3%

A company's revenue decreased by 10% this year and then increased by 5% next year. What is the overall percentage change in revenue? Answer: To find the overall percentage change, multiply the individual percentage changes. Calculation: (100% - 10%) * (100% + 5%) = 90% * 105% = 94.5% Answer: 94.5% (The revenue decreased by 5.5%)

If a product is originally priced at $120 and it is discounted by 40%, what is the discounted price? Answer: To find the discounted price, multiply the original price by (100% - discount percentage). Calculation:$120 * (100% - 40%) = $120 * 60% =$72 Answer: $72 The price of a stock increased from$40 to $50. By what percentage did it increase? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((50 - 40) / 40) * 100% = (10 / 40) * 100% = 0.25 * 100% = 25% Answer: 25% If a student answered 38 out of 50 questions correctly, what is the percentage score? Answer: To find the percentage score, divide the number of correct answers by the total number of questions and multiply by 100%. Calculation: (38 / 50) * 100% = 0.76 * 100% = 76% Answer: 76% A company's revenue decreased from$500,000 to $400,000. What is the percentage decrease in revenue? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((400,000 - 500,000) / 500,000) * 100% = (-100,000 / 500,000) * 100% = -0.2 * 100% = -20% Answer: -20% (The revenue decreased by 20%) If a product's price is increased by 10% and then decreased by 8%, what is the overall percentage change in price? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 10% - 8% = 2% Answer: 2% A store offers a 15% discount on a$80 item. What is the discounted price? Answer: To find the discounted price, multiply the original price by (100% - discount percentage). Calculation: $80 * (100% - 15%) =$80 * 85% = $68 Answer:$68

If a company's profit is $50,000 and its revenue is$500,000, what is the profit margin percentage? Answer: To find the profit margin percentage, divide the profit by the revenue and multiply by 100%. Calculation: ($50,000 /$500,000) * 100% = 0.1 * 100% = 10% Answer: 10%

If a product's price is decreased by 20% and then increased by 15%, what is the overall percentage change in price? Answer: To find the overall percentage change, add the decrease percentage and the increase percentage. Calculation: -20% + 15% = -5% Answer: -5% (The price decreased by 5%)

A company's expenses decreased from $10,000 to$8,000. What is the percentage decrease in expenses? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((8,000 - 10,000) / 10,000) * 100% = (-2,000 / 10,000) * 100% = -0.2 * 100% = -20% Answer: -20% (The expenses decreased by 20%)

If a student scored 75% on a test, what is the fraction and decimal equivalent of the score? Answer: To find the fraction equivalent, divide the percentage score by 100% and simplify if possible. To find the decimal equivalent, divide the percentage score by 100%. Calculation: Fraction: 75% = 75/100 = 3/4 Decimal: 75% = 0.75 Answer: Fraction: 3/4, Decimal: 0.75

A store offers a 30% discount on all items. If an item is originally priced at $120, what is the sale price? Answer: To find the sale price, multiply the original price by (100% - discount percentage). Calculation:$120 * (100% - 30%) = $120 * 70% =$84 Answer: $84 If a student answered 35 questions correctly out of 40, what is the percentage score? Answer: To find the percentage score, divide the number of correct answers by the total number of questions and multiply by 100%. Calculation: (35 / 40) * 100% = 0.875 * 100% = 87.5% Answer: 87.5% A company's revenue increased by 20% this year and then decreased by 8% next year. What is the overall percentage change in revenue? Answer: To find the overall percentage change, multiply the individual percentage changes. Calculation: (100% + 20%) * (100% - 8%) = 120% * 92% = 110.4% Answer: 110.4% (The revenue increased by 10.4%) If a product is originally priced at$200 and it is discounted by 15%, what is the discounted price? Answer: To find the discounted price, multiply the original price by (100% - discount percentage). Calculation: $200 * (100% - 15%) =$200 * 85% = $170 Answer:$170

The price of a stock decreased from $60 to$50. By what percentage did it decrease? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((50 - 60) / 60) * 100% = (-10 / 60) * 100% = -0.1667 * 100% = -16.67% Answer: -16.67% (The stock price decreased by 16.67%)

If a salary is increased by 10% and then decreased by 12%, what is the overall percentage change in salary? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 10% - 12% = -2% Answer: -2% (The salary decreased by 2%)

A company's revenue increased from $1 million to$1.5 million. What is the percentage increase in revenue? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((1.5 million - 1 million) / 1 million) * 100% = (0.5 million / 1 million) * 100% = 0.5 * 100% = 50% Answer: 50%

If a car's fuel efficiency decreases from 40 miles per gallon to 35 miles per gallon, what is the percentage decrease in fuel efficiency? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((35 - 40) / 40) * 100% = (-5 / 40) * 100% = -0.125 * 100% = -12.5% Answer: -12.5% (The fuel efficiency decreased by 12.5%)

A store sells a shirt for $30, which is a 20% profit on the cost price. What is the cost price of the shirt? Answer: To find the cost price, divide the selling price by (100% + profit percentage). Calculation:$30 / (100% + 20%) = $30 / 120% =$25 Answer: $25 If a company's stock price increased from$80 to $100, what is the percentage increase in stock price? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((100 - 80) / 80) * 100% = (20 / 80) * 100% = 0.25 * 100% = 25% Answer: 25% If a product's price is increased by 15% and then decreased by 10%, what is the overall percentage change in price? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 15% - 10% = 5% Answer: 5% A company had a profit of$30,000 last year and $35,000 this year. What is the percentage increase in profit? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((35,000 - 30,000) / 30,000) * 100% = (5,000 / 30,000) * 100% = 0.1667 * 100% = 16.67% Answer: 16.67% If a product's price is increased by 25% and then decreased by 15%, what is the overall percentage change in price? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 25% - 15% = 10% Answer: 10% A store offers a discount of 25% on all items. If an item is priced at$100 after the discount, what was its original price? Answer: To find the original price, divide the discounted price by (100% - discount percentage). Calculation: $100 / (100% - 25%) =$100 / 75% = $133.33 Answer:$133.33

If a company's revenue increased from $2 million to$2.5 million, what is the percentage increase in revenue? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((2.5 million - 2 million) / 2 million) * 100% = (0.5 million / 2 million) * 100% = 0.25 * 100% = 25% Answer: 25%

If a car's fuel efficiency decreases from 25 miles per gallon to 20 miles per gallon, what is the percentage decrease in fuel efficiency? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((20 - 25) / 25) * 100% = (-5 / 25) * 100% = -0.2 * 100% = -20% Answer: -20% (The fuel efficiency decreased by 20%)

A store sells a shirt for $40, which is a 40% profit on the cost price. What is the cost price of the shirt? Answer: To find the cost price, divide the selling price by (100% + profit percentage). Calculation:$40 / (100% + 40%) = $40 / 140% =$28.57 Answer: $28.57 If a company's stock price increased from$50 to $60, what is the percentage increase in stock price? Answer: To find the percentage increase, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((60 - 50) / 50) * 100% = (10 / 50) * 100% = 0.2 * 100% = 20% Answer: 20% If a salary is increased by 5% and then decreased by 3%, what is the overall percentage change in salary? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 5% - 3% = 2% Answer: 2% A company's revenue decreased from$500,000 to $400,000. What is the percentage decrease in revenue? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((400,000 - 500,000) / 500,000) * 100% = (-100,000 / 500,000) * 100% = -0.2 * 100% = -20% Answer: -20% (The revenue decreased by 20%) If a product's price is increased by 10% and then decreased by 5%, what is the overall percentage change in price? Answer: To find the overall percentage change, subtract the decrease percentage from the increase percentage. Calculation: 10% - 5% = 5% Answer: 5% A store offers a 20% discount on a$50 item. What is the discounted price? Answer: To find the discounted price, multiply the original price by (100% - discount percentage). Calculation: $50 * (100% - 20%) =$50 * 80% = $40 Answer:$40

If a company's profit is $10,000 and its revenue is$100,000, what is the profit margin percentage? Answer: To find the profit margin percentage, divide the profit by the revenue and multiply by 100%. Calculation: ($10,000 /$100,000) * 100% = 0.1 * 100% = 10% Answer: 10%

If a product's price is decreased by 15% and then increased by 10%, what is the overall percentage change in price? Answer: To find the overall percentage change, add the decrease percentage and the increase percentage. Calculation: -15% + 10% = -5% Answer: -5% (The price decreased by 5%)

A company's expenses decreased from $20,000 to$16,000. What is the percentage decrease in expenses? Answer: To find the percentage decrease, divide the difference between the new value and the original value by the original value and multiply by 100%. Calculation: ((16,000 - 20,000) / 20,000) * 100% = (-4,000 / 20,000) * 100% = -0.2 * 100% = -20% Answer: -20% (The expenses decreased by 20%)

If a student scored 80% on a test, what is the fraction and decimal equivalent of the score? Answer: To find the fraction equivalent, divide the percentage score by 100% and simplify if possible. To find the decimal equivalent, divide the percentage score by 100%. Calculation: Fraction: 80% = 80/100 = 4/5 Decimal: 80% = 0.8 Answer: Fraction: 4/5, Decimal: 0.8

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