Set 5: Ratios Rates Proportions (Beginner)

[Variation 1] **Choice C is the best answer.** x/y = 2/5. 12/y = 2/5. y = 12 times 5/2 = 30

Explanation

Answer: C

PROBLEM

Recent studies show that if x:y = 2:5 and x = 12, find y.

If x:y = 2:5 and x = 12, find y.

✓ Correct

Detailed Explanation

[Variation 1] Choice C is the best answer. x/y = 2/5. 12/y = 2/5. y = 12 times 5/2 = 30

Why others are wrong:

A: 27 is incorrect because it does not satisfy the equation.

B: 31 is incorrect because it does not satisfy the equation.

D: 60 is incorrect because it does not satisfy the equation.