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if the price of a book is first decreased by 25% and then increased by 20%, then the net change in the price will be :

10
20
30
40

Correct Answer: 10

Explanation:

Let the original price be Rs. 100.

New final price = 120 % of (75 % of Rs. 100) = Rs. [(120/100) * (75/100) * 100] = Rs. 90.

Decrease = 10%

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