During a sale, a bookstore reduced the price by 3/20 for each $25 book. What was the final sale price?

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Multiple Choice

During a sale, a bookstore reduced the price by 3/20 for each $25 book. What was the final sale price?

Explanation:
A discount of 3/20 means 3/20 of the original price is taken off. For a $25 book, the amount off is 25 × 3/20 = 25 × 0.15 = 3.75. Subtracting that from the original price gives 25 − 3.75 = 21.25. So the final sale price is $21.25. (Equivalently, 25 × (1 − 3/20) = 25 × 17/20 = 21.25.)

A discount of 3/20 means 3/20 of the original price is taken off. For a $25 book, the amount off is 25 × 3/20 = 25 × 0.15 = 3.75. Subtracting that from the original price gives 25 − 3.75 = 21.25. So the final sale price is $21.25. (Equivalently, 25 × (1 − 3/20) = 25 × 17/20 = 21.25.)

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