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a round trip car ride took 12 hours. the first half of the trip took 7 hours at a rate of 45 miles per hour. what was the average rate of speed on the return trip?

  • MATH! -

    Distance = rate * time

    The distance in both directions are equal.

    rate1 * time1 = rate2 * time2

  • MATH! -


  • MATH! -

    63 mph

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