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1

Set 4: Ratios Rates Proportions (Intermediate)

Explanation

Answer: A

PROBLEM

Solve: 4/3 = 20/x. Find x.

Solve: 4/3 = 20/x. Find x.

A.

15

✓ Correct
B.

7

C.

18

D.

30

Detailed Explanation

Choice A is the best answer. Cross multiply: 4x = 3 times 20 = 60. x = 15

Why others are wrong:
B: 7 is incorrect because it does not satisfy the equation.
C: 18 is incorrect because it does not satisfy the equation.
D: 30 is incorrect because it does not satisfy the equation.
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