SOLUTION: Renee rows a boat downstream for 288 miles. The return trip upstream took 12 hours longer. If the current flows at 2 mph, how fast does Renee row in still water?

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Question 1105456: Renee rows a boat downstream for 288 miles. The return trip upstream took 12 hours longer. If the current flows at 2 mph, how fast does Renee row in still water?
Answer by josgarithmetic(39629) About Me  (Show Source):
You can put this solution on YOUR website!
Downstream, time was 288%2F%28r%2B2%29.
Upstream, time was 288%2F%28r-2%29.

Solve this equation for r, the boat speed in absence of river current:
288%2F%28r-2%29-288%2F%28r%2B2%29=12