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March 27, 2017

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A tugboat goes 160 miles up stream in 20 hours, return trip downstream takes 5 hours. Find speed of tugboat without the current and the speed of the current

  • Algebra - ,

    distance = rate x time

    In this case we have:

    distance = (rate + current) x time

    and

    distance = (rate - current) x time

    160 = 20(r-c)
    160 = 5(r + c)

    160 = 20r - 20c
    160 = 5r + 5c

    Can you solve from here?

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