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 :
A) 10
B) 20
C) 30
D) 40
Answer & ExplanationAnswer: A) 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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