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16 August, 00:38

Charlie drove 864 miles in 12 hours. at the same rate, how long would it take him to drive 504 miles?

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  1. 16 August, 00:43
    0
    The answer is 7 hours.

    The formula for this is Speed = Distance/Time. Time = Distance/Speed

    864miles/12hrs = 72mph

    With the same formula plug in 504 miles for Distance and leave time as X and speed will be 72mph.

    72mph = 504miles/x

    Cross multiply

    72x = 504

    Divide by 72

    X = 7 hours
  2. 16 August, 00:56
    0
    We can solve this by setting up a proportion where 864/12 = 504/x. We cross multiply and get 864x = 504 * 12. So 864x = 6048. Divide by 864 on both sides, x = 7.

    It would take Charlie 7 hours to drive 504 miles.
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