Solution -
Let,
The number of people who has been asked for the donations = 100x
People already solicited = 60% of 100x
= 60x
Remaining people = 40% of 100x
= 40x
Amount collected from the people solicited = 600 × 60x
= 36000x
Thus,
75% of the amount collected = 36000x
1% = 36000x/75
1% = 480x
Remaining amount = 25%
25% = 25*480x
25% = 12000x
Therefore,
Average donation from remaining people = 12000x/40x
= 300
Hence,
The correct option is (b) 300.
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