Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 4-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water?

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- Nov 25th 2008, 11:18 PMmagentaritaBoat in Still Water
Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 4-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water?

- Nov 26th 2008, 09:13 AMgreat_math
Let the speed in still water be mph

When it travels upstream its speed= mph

Time taken to go upstream= h

Speed in downstream = mph

Time taken to go downstream or time taken to return back= h

And 20 min hrs

But according to question...

Solve it and you will get the answer - Nov 28th 2008, 06:00 AMmagentaritawow.....
- Nov 28th 2008, 06:06 AMgreat_math
- Nov 28th 2008, 10:08 AMmagentaritaok..........