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16 August, 15:21

Two cars leave town at the same time going in opposite directions. One travels at 70 mi/h and the other at 55 mi/h. In how many hours will they be 250 miles apart?

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  1. 16 August, 16:21
    0
    I think its 17 hours
  2. 16 August, 17:59
    0
    Use this correlation distance-time-speed to find the answer

    d = vt

    d stands for distance, v stands for speed/velocity, t stands for time

    The sum of the distance must be 250 miles, so they could be 250 miles apart.

    The time must be the same for the two cars.

    distance 1 + distance 2 = 250

    v₁t + v₂t = 250

    70t + 55t = 250

    125t = 250

    t = 250/125

    t = 2

    They will be 250 miles apart in 2 hours
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