algebra 2

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I don't know how to do this the speed of train A is 18mph slower than the speed of train B train A travels 190 miles in the same time it takes train B to travel 280 miles find the speed of each train please help so i can pass my quiz.

  • algebra 2 -

    speed of train B --- x mph
    speed of train A --- x - 18 mph

    for A: time to go 190 miles = 190/(x-18)
    for B: time to go 280 miles = 280/x

    but these two times are equal, so ....
    190/(x-18) = 280/x
    280x - 5040 = 190x
    70x = 5040
    x = 72

    take it from there

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