Set 5: Percentages

Explanation

Answer: C

A laptop originally costs $400. It is on sale for 10% off. What is the sale price?

370

350

360

✓ Correct

180

Detailed Explanation

Choice C is correct. 1. Original price: $400 Discount: 10% ×$ 400 = $40 Sale price:$ 400 - $40 =$ 360 Therefore, the sale price is $360.

Key Steps:

•

Apply the appropriate mathematical formula

•

The correct answer is 360

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.

Master all sections for your best SAT score