Free Practice Question
PS · Problem Solving
605-655
Distance/Rate Problems
Yesterday it took Robert 3 hours to drive from City A to City B. Today it took Robert 2.5 hours to drive back from City В to City A along the same route. If he had saved 15 minutes in both trips, the speed for the round trip would be 60 miles per hour. What is the distance between city A and city B?
Answer Choices
Correct answer marked belowA
90
B
120
150
Correct
D
240
E
300
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Explanation
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Sign in to commentWhat this question tests
What it tests
Your application of distance = rate × time to trains, boats, and commuters, including relative speed.
Common trap
Mixing units (miles per hour vs. minutes) or averaging speeds — average speed is total distance over total time.
Details
Difficulty
605-655
Type
PS
Category