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Question 65

A bicycle costs 72 dollars after a 20% discount. Which calculation does NOT recover the original price by the reverse-percentage method?

  1. 72 / 0.80
  2. 72 × 100 / 80
  3. 72 + 0.20 × 72Correct answer
  4. Solve 0.80 × original price = 72

Explanation

The original price satisfies 0.80 times the original equals 72, so dividing 72 by 0.80 gives 90. The calculation 72 + 0.20 × 72 = 86.40 wrongly takes the discount from the final sale price.

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Question 65: A bicycle costs 72 dollars after a 20% discount. Which… · Percentages · Questena