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Boat travel

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Debbie traveled by boat 5 miles up stream 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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Boat travel is measured in this tutorial.

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Hello and thank you for posting your question to Brainmass.

Let the boat's speed in still water denoted by x

Then, going upstream the speed is x-4

The time of travel is the distance of 5 miles (in hours) is ...

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