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29 May, 10:03

Two cars traveled equal distances in different amounts of time. Car A traveled the distance in 4 h, and Car B traveled the distance in 4.5 h. Car B traveled 5 mph slower than Car A.

How fast did Car B travel?

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  1. 29 May, 11:50
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    X-5=speed of car B

    x = speed of car A

    Distance = speed times time

    distances is equal so

    (x-5) (4.5) = (x) (4)

    4.5x-22.5=4x

    multiply both sides by 2 to get rid of the decimals

    9x-45=8x

    subtract 8x from both sides

    x-45=0 a

    add 45 to both sides and get

    x=45

    speed of car A = 45 mph

    Speed of car B = 45-5 or 40 mph

    Speed of car B = 40 mph
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