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28 April, 00:35

If a bicyclist traveled at 8:am to 8:18am a distance of 4.5 miles and from 8:18am to 8:45am a distance of 7.5 miles. What is the average miles per hour?

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  1. 28 April, 04:12
    0
    8 am at 0

    8:18 at 4.5

    8:48 at 7.5 miles?

    18 min =.3 hour

    48 min =.8 hour

    in first. 3 hours speed = 4.5/.3 = 15 mph

    in next. 5 hours = speed = 3/.5 = 6 mph

    average speed for the whole trip = 7.5 miles/.8 hours = 9.375 mph
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