Set 5: Percentages

Explanation

Answer: C

A laptop originally costs $180. It is on sale for 25% off. What is the sale price?

125

135

✓ Correct

145

Detailed Explanation

Choice C is correct. 1. Original price: $180 Discount: 25% ×$ 180 = $45 Sale price:$ 180 - $45 =$ 135 Therefore, the sale price is $135.

Key Steps:

•

Apply the appropriate mathematical formula

•

The correct answer is 135

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.

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

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