Answers

2016-05-02T05:15:33+05:30
Let cost price of each apple be 1 rupee

Such that, 
Cost price of 40 apples = 40 rupees
Selling price of 30 apples = 40 rupees

As given CP of 40 apples = SP of 30 apples

Gain % = (40-30/30) × 100
             = 10/30 ×100
             = 1000/30
             = 100/3
             = 33.33%

Therefore, Gain % = 33.33%

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