SOLUTION: can you please help me!!!!!!! solve this one using Rational expression!!!! Debbie traveled by boat 5 miles upstream to fish in her favorite spot. because of the 6-mph current, it t

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Question 36773: can you please help me!!!!!!! solve this one using Rational expression!!!! Debbie traveled by boat 5 miles upstream to fish in her favorite spot. because of the 6-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water? (please round your answer to one decimal place)
Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
Equation:
5%2F%28x%2B6%29-5%2F%28x-6%29=1%2F3
5%28%28x%2B6%29-%28x-6%29%29=%28%28x%2B6%29%28x-6%29%29%2F3
5%2812%29=%28x%5E2-36%29%2F3
60=%28x%5E2-36%29%2F3
180=x^2-36
x^2=216
x=14.6
Hence, the speed of the boat is 14.6mph.
PAul.