Set 2: Ratios Rates Proportions (Intermediate)

**Choice C is the best answer.** Cross multiply: 9x = 4 times 18 = 72. x = 8

Explanation

Answer: C

PROBLEM

Solve: 9/4 = 18/x. Find x.

✓ Correct

Detailed Explanation

Choice C is the best answer. Cross multiply: 9x = 4 times 18 = 72. x = 8

Why others are wrong:

A: 4 is incorrect because it does not satisfy the equation.

B: 11 is incorrect because it does not satisfy the equation.

D: 6 is incorrect because it does not satisfy the equation.