Set 5: Ratios Rates Proportions (Beginner)

**Choice C is the best answer.** Cross multiply: 2x = 4 times 10 = 40. x = 20

Explanation

Answer: C

PROBLEM

Solve: 2/4 = 10/x. Find x.

✓ Correct

Detailed Explanation

Choice C is the best answer. Cross multiply: 2x = 4 times 10 = 40. x = 20

Why others are wrong:

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

B: 40 is incorrect because it does not satisfy the equation.

D: 10 is incorrect because it does not satisfy the equation.