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
Question and options
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% increase
- 20% increase
- 10% decrease
- 5% decrease
Answer and explanation
Correct answer: C - 10% decrease
A 25% cut multiplies the price by 0.75 and a 20% rise then multiplies it by 1.20. The net factor is 0.75 x 1.20 = 0.90, a 10% decrease. A 5% decrease comes from simply subtracting 20 from 25, which ignores that the rise applies to the reduced price.
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CUSAT CAT LLM
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