i. 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

Answer and Explanation

The Correct answer is : 10

Let the original price be Rs. 100.

New final price = Rs=. ${(\frac{120}{100}\times\frac{75}{100}\times100)}$= Rs. 90.

Decrease = 10%

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