Moving downstream at an average speed of 15 km / h, the distance between the two berths was covered by the motor

univerkov | December 9, 2020 | education

Moving downstream at an average speed of 15 km / h, the distance between the two berths was covered by the motor ship in 2 hours. How long in hours will the motor ship take for the return journey if its average speed is 10 km / h?

1.15 * 2 = 30 (km) – distance traveled in 2 hours
2. 30/10 = 3 (hours) – the time of the ship for the return journey.
Answer: It will take the motor ship 3 hours to overcome the return journey at Wed. speed 10 km / h.

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