A vehicle journeyed from Seattle to Portland in 5 hours at an average speed of x miles per hour. If the vehicle returned along the same path at an average speed of y miles per hour, what was the total time taken for the round trip, in minutes?

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(5 + 5x/y)*60

Correct

(5 + 5y/x)*60

25(x + y)

5(x + y)

(x + y)/300

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Official Explanation

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A vehicle journeyed from Seattle to Portland in 5 hours at an average speed of x miles per hour. The distance from Seattle to Portland can be calculated as (time)(rate), which gives us a distance of (5)(x) = 5x miles. The vehicle then returned along the same route at an average speed of y miles per hour. The time taken to drive back from Portland to Seattle is given by the…

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Comments

SukanayaJan 7, 2025

Thankss

DukeFeb 3, 2025

Thank you very much!

What 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.