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3

Set 4: Ratios Rates Proportions (Intermediate)

Explanation

Answer: B

PROBLEM

Solve: 4/5 = 16/x. Find x.

Solve: 4/5 = 16/x. Find x.

A.

22

B.

20

✓ Correct
C.

21

D.

23

Detailed Explanation

Choice B is the best answer. Cross multiply: 4x = 5 times 16 = 80. x = 20

Why others are wrong:
A: 22 is incorrect because it does not satisfy the equation.
C: 21 is incorrect because it does not satisfy the equation.
D: 23 is incorrect because it does not satisfy the equation.
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