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10 September, 08:58

A wheel made 513 revolutions at 68 3/7 per minute. How minutes did it rotate?

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  1. 10 September, 10:24
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    time (t) = 7.60805

    Step-by-step explanation:

    Givens

    Rv = 513

    Rate = 67 3/7

    t = ?

    Formula

    Rv = R * t

    Solution

    513 = 67 3/7 * t

    Change the 3/7 to a decimal

    3:7 = 0.428571 repeating

    513 = 67.428571 ... * t Divide by 57.42857

    513 / 67.438571 = t Carry out the division

    7.6081 = t Switch

    t = 76081 minutes
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