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1 April, 22:12

A car travels 40 km in an hour. in the next two hours it travels 78 km. what is the average speed of the car?

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  1. 2 April, 00:22
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    To work this out using the speed equation:

    s = d/t

    therefore,

    d = 40000m (km = 1000m) so, 40 * 1000 = 40000

    t = 2h

    s = 40000/2 = 20000m

    s = 20kmh.
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