4

Set 2: Ratios Rates Proportions (Intermediate)

Explanation

Answer: B

PROBLEM

On a map, 1 inch represents 4 miles. If two cities are 9 inches apart on the map, how many miles apart are they?

On a map, 1 inch represents 4 miles. If two cities are 9 inches apart on the map, how many miles apart are they?

A.

33

B.

36

✓ Correct
C.

39

D.

18

Detailed Explanation

Choice B is the best answer. Distance = 9 inches times 4 miles/inch = 36 miles

Why others are wrong:
A: 33 is incorrect because it does not satisfy the equation.
C: 39 is incorrect because it does not satisfy the equation.
D: 18 is incorrect because it does not satisfy the equation.