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September 2, 2014

September 2, 2014

Posted by **Meshelle** on Tuesday, March 3, 2009 at 7:56pm.

takes 5 hr. Find the speed of the boat in still water

- math 116 -
**drwls**, Tuesday, March 3, 2009 at 8:28pmThe downstream speed with respect to land is V+6 and the upstream speed is V-6, where V is the speed in still water.

Let the distance be D

D/(V+6) = 4 hrs

D/(V-6) = 5

4(V+6) = 5(V-6)

V = 54 mph

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