Set 1: Ratios Rates Proportions (Beginner)

**Choice D is the best answer.** x/y = 4/5. 12/y = 4/5. y = 12 times 5/4 = 15

Explanation

Answer: D

PROBLEM

If x:y = 4:5 and x = 12, find y.

✓ Correct

Detailed Explanation

Choice D is the best answer. x/y = 4/5. 12/y = 4/5. y = 12 times 5/4 = 15

Why others are wrong:

A: 13 is incorrect because it does not satisfy the equation.

B: 14 is incorrect because it does not satisfy the equation.

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