Discuss Forum
1. Increasing the original price of an item by 10% , then decreasing by 20% and then again increasing the price by 10% is equivalent.
- A. 4.4% increase
- B. 4.4% increase
- C. 4.4% increase
- D. 4.4% increase
Answer: Option B
Explanation:
±a±b+(ab)/100
=10-20-(10×20)/100
=-12%
Again,
±a±b+(ab)/100
=-12+10-(12×10)/100
=-3.2% [- means decrease]
(ans).
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