Set 4: Ratios Rates Proportions (Beginner)

[Variation 1] **Choice C is the best answer.** Cost per item = 21 / 7 = 3 dollars

Explanation

Answer: C

PROBLEM

Recent studies show that if 7 items cost $21, what is the cost per item?

If 7 items cost $21, what is the cost per item?

✓ Correct

Detailed Explanation

[Variation 1] Choice C is the best answer. Cost per item = 21 / 7 = $3

Why others are wrong:

A: 2 is incorrect because it does not satisfy the equation.

B: 5 is incorrect because it does not satisfy the equation.

D: 1 is incorrect because it does not satisfy the equation.