document.write( "Question 402051: The river is moving at 5 miles per hour. A boat can travel 5 miles upstream in the same time that it takes to travel 15 miles downstream. How fast can the boat go in still water?
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Algebra.Com's Answer #284492 by robertb(5830)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "==> \n" ); document.write( "==> r + 5 = 3(r-5) \n" ); document.write( "==> r + 5 = 3r - 15 \n" ); document.write( "==> 20 = 2r \n" ); document.write( "==> r = 10 mph, the speed of the boat in still water. \n" ); document.write( " |