Problem-Solving and Data AnalysisVery hardReverse percentage change
Problem-Solving and Data Analysis practice question
After a 40% discount, a coat costs $90. Which of the following is closest to the percent increase needed to bring the discounted price back up to the original price?
- A. 67%Correct
- B. 40%
- C. 60%
- D. 150%
Answer: A. 67%
Original: 90/0.6 = $150. Increase needed: 60 on 90, which is 60/90 ≈ 67%.
Why the other answers are wrong
- B. 40%
- A 40% increase on 90 gives 126, short of 150; the percentage base changed.
- C. 60%
- 60% of 90 is 54, giving 144, not 150.
- D. 150%
- 150% would more than double the price; 150 is the ORIGINAL price in dollars.
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