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31 August, 04:12

A truck travels for 34.1 minutes at a speed of 53.5 km/h and then for 55.7 minutes at a speed of 97.9 km/h. What is the average speed of the truck?

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  1. 31 August, 06:54
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    53.5 km / hour for 34.1 minutes (34.1 / 60 = 0.5683333333 hours)

    97.9 km / hour for 55.7 minutes (55.7 / 60 = 0.9283333333 hours)

    53.5 *.5683333333 = 30.4058333333 kilometers

    97.9 * 0.9283333333 = 90.8838333333 kilometers

    Total Time = 0.5683333333 + 0.9283333333 = 1.4966666667 hours

    Total Distance = 30.4058333333 + 90.883833333 = 121.2896666667 km

    Avg Speed = 121.2896666667 km / 1.4966666667 = 81.0398663697 km/hour
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