Set 2: Percentages

Explanation

Answer: A

A phone originally costs $70. It is on sale for 30% off. What is the sale price?

✓ Correct

Detailed Explanation

Choice A is correct. 1. Original price: $70 Discount: 30% ×$ 70 = $21 Sale price:$ 70 - $21 =$ 49 Therefore, the sale price is $49.

Key Steps:

•

Apply the appropriate mathematical formula

•

The correct answer is 49

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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