Intermediate Algebra

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The speed of a boat in still water is 29mph. if the boat travels 140mph downstream in the same time that it takes to travel 92miles upstream, find the speed of the stream.

  • Intermediate Algebra -

    distance=velocity*time
    distanceupstream=(29+Vs)time
    distancedownstream=(29-Vs)time

    set the distances to bd 140 downstream, and 92 up

    140=(29+vs)time
    92=(29-Vs)time

    or 140/92 =(29+Vs)/(29-Vs)

    92(29+Vs)=140(29-Vs) and you solve for Vs

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