If 9 items cost 81 dollars, what is the cost per item?

**Choice B is the best answer.** Cost per item = 81 / 9 = 9 dollars

**Choice B is the best answer.** Cost per item = 81 / 9 = 9 dollars

Set 1: Ratios Rates Proportions (Beginner)

Explanation

Answer: B

PROBLEM

If 9 items cost $81, what is the cost per item?

✓ Correct

Choice B is the best answer. Cost per item = 81 / 9 = $9

Why others are wrong:

A: 12 is incorrect because it does not satisfy the equation.

C: 7 is incorrect because it does not satisfy the equation.

D: 18 is incorrect because it does not satisfy the equation.