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The students of a class contributed for a programmer. Each student contributed the same amount. Had there is more in the class and each student had contributed would have increased from 3000 to Rs. 3200. Find the strength of class.

Class: 10

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answer is B.

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Detailed Solution

Let strength of the class = x
amount of each student contributed = y Total amount contributed .

when student in class is 15 more amounts raised to 3200.

The strength of class = 28

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