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math

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28 miles downstream in 2 hours 12 miles upstream in 3 hours what would the be speed in still water

  • math -

    if boat speed is b and water speed is w,

    28/(b+w) = 2
    12/(b-w) = 3

    b=9, w=5

    check: 28/9 = 2 and 12/4 = 3

  • math -

    oops 28/14=2

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