Set 3: Percentages

Explanation

Answer: D

A book originally costs $250. It is on sale for 10% off. What is the sale price?

112

235

215

225

✓ Correct

Detailed Explanation

Choice D is correct. 1. Original price: $250 Discount: 10% ×$ 250 = $25 Sale price:$ 250 - $25 =$ 225 Therefore, the sale price is $225.

Key Steps:

•

Apply the appropriate mathematical formula

•

The correct answer is 225

Why others are wrong:

A: This would give an incorrect result. Choice A is incorrect and may result from a calculation error.

B: This would give an incorrect result. Choice B is incorrect and may result from a calculation error.

C: This would give an incorrect result. Choice C is incorrect and may result from a calculation error.

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