Set 10: Linear Equations (Advanced)

Explanation

Answer: A

If 3 apples cost $1.50, how much do 7 apples cost?

3.50

✓ Correct

4.50

2.50

3.00

Detailed Explanation

Choice A is correct. Choice Ahoice C is the correct answer. 1. Unit Price: $1.50/ 3 = 0.50$ per apple. 2. Cost: $7\times 0.50 = 3.50$ Choice Ahoice C is incorrect because it results from an error in the solution process. Choice Ahoice B is incorrect because it results from an error in the solution process. Choice Ahoice D is incorrect because it results from an error in the solution process.

Key Steps:

•

The correct answer is 3.50

Why others are wrong:

B: Choice B is incorrect and may result from a calculation error.

C: Choice C is incorrect and may result from a calculation error.

D: Choice D is incorrect and may result from a calculation error.

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