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28-12-2017
Physics

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A train travels 68 kilometers in 4 hours, and then 91 kilometers in 2 hours. What is its average speed?

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28-12-2017

The train travelled a total distance of 68 + 91 = 159km.

It took 4 + 2 = 6 hours to travel that distance.

The average speed is 159/6 = 26.5 km/h

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