SOLUTION: 84.)Gone Fishing. 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.

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Question 166414: 84.)Gone Fishing. 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?
Answer by midwood_trail(310) About Me  (Show Source):
You can put this solution on YOUR website!
The boat will travel faster with the current and slower against the current.
Here is an easier equation to play with:
5(w + 4) = 5(w - 4) + 20(w + 4)(w - 4)
Can you take it from here?