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28 September, 19:18

The distance between two cities is 330km. Two cars leave the two cities at the same time and drive towards each other with speeds of 85km/hr and 80km/hr. After how many hours will the cars meet? If x is the time of the hours, model the problem with the correct equation

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  1. 28 September, 19:43
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    Multiply the speed of each car by x (time) and add them together to equal total distance.

    85x + 80x = 330

    Simplify:

    165x = 330

    Divide both sides by 165:

    x = 330 / 165

    x = 2

    Check:

    85 x 2 = 170

    80 x 2 = 160

    170 + 160 = 330

    It takes 2 hours.
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