10

Set 1: Ratios Rates Proportions (Advanced)

Explanation

Answer: D

PROBLEM

On a map, 1 inch represents 4 miles. If two cities are 10 inches apart on the map, how many miles apart are they?

On a map, 1 inch represents 4 miles. If two cities are 10 inches apart on the map, how many miles apart are they?

A.

38

B.

80

C.

41

D.

40

✓ Correct

Detailed Explanation

Choice D is the best answer. Distance = 10 inches times 4 miles/inch = 40 miles

Why others are wrong:
A: 38 is incorrect because it does not satisfy the equation.
B: 80 is incorrect because it does not satisfy the equation.
C: 41 is incorrect because it does not satisfy the equation.

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