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4

Set 5: Ratios Rates Proportions (Beginner)

Explanation

Answer: B

PROBLEM

Solve: 4/5 = 12/x. Find x.

Solve: 4/5 = 12/x. Find x.

A.

16

B.

15

✓ Correct
C.

13

D.

14

Detailed Explanation

Choice B is the best answer. Cross multiply: 4x = 5 times 12 = 60. x = 15

Why others are wrong:
A: 16 is incorrect because it does not satisfy the equation.
C: 13 is incorrect because it does not satisfy the equation.
D: 14 is incorrect because it does not satisfy the equation.
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