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If the cost price of 10 laptops is equal to the selling price of 7 laptops, what is the gain or loss percentage is?

A51% gain

B42.86% gain

C35% loss

D42.86% loss

Answer:

D. 42.86% loss

Read Explanation:

Let C.P of each laptop be Rs. 1 C.P of 7 laptops = Rs. 7 C.P of 10 laptops = Rs. 10 S.P of 7 laptops = Rs. 10 Gain = Rs. (10 – 7) = Rs. 3 Gain % = 3/7 × 100 = 300/7 = 42.86%


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