Set 3: Ratios Rates Proportions (Beginner)

**Choice C is the best answer.** Cross multiply: 9x = 5 times 36 = 180. x = 20

Explanation

Answer: C

PROBLEM

Solve: 9/5 = 36/x. Find x.

✓ Correct

Detailed Explanation

Choice C is the best answer. Cross multiply: 9x = 5 times 36 = 180. x = 20

Why others are wrong:

A: 22 is incorrect because it does not satisfy the equation.

B: 19 is incorrect because it does not satisfy the equation.

D: 21 is incorrect because it does not satisfy the equation.