3
Answer: DSet 2: Ratios Rates Proportions (Advanced)
Explanation
PROBLEM
On a map, 1 inch represents 3 miles. If two cities are 10 inches apart on the map, how many miles apart are they?
On a map, 1 inch represents 3 miles. If two cities are 10 inches apart on the map, how many miles apart are they?
A.
31
B.
27
C.
28
D.✓ Correct
30
Detailed Explanation
Choice D is the best answer. Distance = 10 inches times 3 miles/inch = 30 miles
Why others are wrong:
A: 31 is incorrect because it does not satisfy the equation.
B: 27 is incorrect because it does not satisfy the equation.
C: 28 is incorrect because it does not satisfy the equation.