7
Answer: CSet 2: Ratios Rates Proportions (Intermediate)
Explanation
PROBLEM
On a map, 1 inch represents 2 miles. If two cities are 9 inches apart on the map, how many miles apart are they?
On a map, 1 inch represents 2 miles. If two cities are 9 inches apart on the map, how many miles apart are they?
A.
9
B.
20
C.✓ Correct
18
D.
21
Detailed Explanation
Choice C is the best answer. Distance = 9 inches times 2 miles/inch = 18 miles
Why others are wrong:
A: 9 is incorrect because it does not satisfy the equation.
B: 20 is incorrect because it does not satisfy the equation.
D: 21 is incorrect because it does not satisfy the equation.