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11 February, 15:34

A car and a truck left Washington, DC traveling in opposite directions. The car traveled 19 miles per hour faster than the truck, and at the end of 8 hours they were 1048 miles apart. What was the average speed of each vehicle?

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Answers (2)
  1. 11 February, 16:21
    0
    The car was going 55mph

    The truck was going 36mph
  2. 11 February, 16:53
    0
    Truck speed be x

    car travel at x+19

    they travel in opposite directions

    so the separation is (x+x+19) * no. of hours

    1048 = (2x+19) * 8

    x = ((1048/8) - 19) / 2

    =56

    truck speed is 56 miles per hour

    car speed is 56+19 = 75 miles per hour
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