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March 27, 2017

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Solve the problem. A boat can go 33 mph in still water. It takes as long to go 300 miles upstream as it does to go downstream 360 miles. How fast is the current?

  • math help please - ,

    Downstream velocity is vb+vs
    Upstream velocity is Vb-Vs

    You are given Vb.

    upstream: 300=(vb-vs)T
    downstream:360=(vb+Vs)T
    add the equations...
    660=2vbT solve for time. Then, go back to either equation and solve for vstream.

  • math help please - ,

    i am getting lost somewhere...

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