Set 1: Percentages

Explanation

Answer: A

A laptop originally costs $490. It is on sale for 10% off. What is the sale price?

441

✓ Correct

431

451

220

Detailed Explanation

Choice A is correct. 1. Original price: $490 Discount: 10% ×$ 490 = $49 Sale price:$ 490 - $49 =$ 441 Therefore, the sale price is $441.

Key Steps:

•

Apply the appropriate mathematical formula

•

The correct answer is 441

Why others are wrong:

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.

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

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