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7 September, 03:12

Two trains leave towns 1152km apart at the same time and travel toward each other. One train travels 14km/h slower than the other. If they meet in 4 hours, what is the rate of each train?

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  1. 7 September, 03:21
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    137 km/h and 151 km/h

    Step-by-step explanation:

    Let x km/h be the rate of slower train, then (x+14) km/h is the rate of faster train.

    In 4 hours:

    the slower train covers the distance 4x km; the faster train covers the distance 4 (x+14) km.

    Since they meet in 4 hours, then they cover in total the whole distance between two cities, so

    4x+4 (x+14) = 1152

    Solve this equation for x:

    4x+4x+56-1152

    8x=1152-56

    8x=1096

    x=1096/8

    x=137 km/h

    x+14=137+14=151 km/h
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