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31 May, 12:29

Jim began a 226-mile bicycle trip to build up stamina for a triathlete competition. Unfortunately, his bicycle chain broke, so he finished the trip walking. The whole trip

took 7 hours. If Jim walks at a rate of 4 miles per hour and rides at 40 miles per hour, find the amount of time he spent on the bicycle

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  1. 31 May, 12:44
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    Answer: 5.5hours

    Step-by-step explanation:

    Total distance = 226miles

    Total time = 7 hours

    Let b represent total time spent while walking.

    Distance (walking) = 4b

    Distance (riding) = 40 (7-b)

    Total distance 226 = 4b + 40 (7-b)

    226 = 4b + 280 - 40b

    226 = 280-36b

    b = 54/36

    b = 1.5hours

    Amount of time spent walking = 1.5hours

    Amount of time spent riding = 7-1.5 = 5.5hours

    Amount of time spent on bicycle = 5.5hours
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