Trolleybus

Trolleybus line No. 215 is 30 km long. If the trolleybus travels 4 km/h faster, the round trip would be 39 minutes shorter. Calculate the trolleybus's speed and the time for a round trip.

Your answer:

km/h
h


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You need to know the following knowledge to solve this word math problem:

algebraarithmeticbasic operations and conceptsUnits of physical quantitiesthemes, topicsGrade of the word problem

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