Problem-Solving and Data AnalysisVery hardOriginal price before two discounts
Problem-Solving and Data Analysis practice question
A coat's price was reduced by 20%, and the reduced price was then cut by a further 15%. The final price was $170. What was the original price, in dollars?
Answer: 250
170 = original × 0.8 × 0.85 = original × 0.68, so original = 250.
Common wrong answers
- If you answered 200
- 200 divides 170 by 0.85 only.
- If you answered 261.54
- 261.54 divides 170 by 0.65, adding the discounts as if they were 35% off.
- If you answered 229.5
- 229.5 divides by 0.8 and then multiplies by 0.85 instead of dividing.
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