math

posted by greg

a rectangular parking lot has a length that is 10 yards greater than the width. the area of the parking lot is 200 square yards.find the length and the width

  1. Shaniqua

    the equation you use is:
    200=w(10+w)
    200=10w+w^2
    w^2+10w-200 = 0
    (w+20)(w-10)= 0
    w = -20 or 10
    it has to be positive so the answer is 10.
    The width is 10 yards and the length is 20 yards

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