4
Answer: BSet 4: Ratios Rates Proportions (Intermediate)
Explanation
PROBLEM
Recent studies show that on a map, 1 inch represents 3 miles. If two cities are 5 inches apart on the map, how many miles apart are they?
On a map, 1 inch represents 3 miles. If two cities are 5 inches apart on the map, how many miles apart are they?
A.
17
B.✓ Correct
15
C.
30
D.
12
Detailed Explanation
[Variation 1] Choice B is the best answer. Distance = 5 inches times 3 miles/inch = 15 miles
Why others are wrong:
A: 17 is incorrect because it does not satisfy the equation.
C: 30 is incorrect because it does not satisfy the equation.
D: 12 is incorrect because it does not satisfy the equation.