Mathematics, 01.07.2021 08:30, ghernadez

pleasee help me, A train travels from station P to station Q at a speed of 90km/h in 3hours 40minutes. The train stops at station Q for 25minutes before returns to station P. The time taken from station P to station Q. Calculate the average speed, in km/h, of the whole journey of the train

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pleasee help me, A train travels from station P to station Q at a speed of 90km/h in 3hours 40minute...