Official Guide Explanation:
Problem Solving #73




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Solution and Metadata

Question: 73
Page: 71
Difficulty: 4 (Moderately Easy)
Category 1: Arithmetic > Percents > Percent Change
Category 2: Word Problems > Discount >

Explanation: While the question is phrased as an inequality, you can treat it like an equation. Find the original price of a sweater whose 15\discount is $10, and you'll have the smallest amount the original price could've been. So, if the price of the sweater is p, (0.15)p = 10, or (3/20)p = 10. Multiply both sides by (20/3): p = 10( (20/3)) = (200/3) ≈ 67, choice (B).

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