document.write( "Question 465685: On a canoe trip of 54 km each way, a group of friends travelled 3 km/hr faster downstream than upstream because of the river's current. The downstream trip took 3 hours less than the upstream trip. Find the upstream and downstream speeds of the canoe.\r
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document.write( "Thank you for your help! \n" );
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Algebra.Com's Answer #319096 by jorel1380(3719)![]() ![]() You can put this solution on YOUR website! 54/(x+3)+3=54/x \n" ); document.write( "54x+3(x)(x+3)=54(x+3) \n" ); document.write( "54x+3x2+9x=54x+162 \n" ); document.write( "3x2+9x-162=0 \n" ); document.write( "x2+3x-54=0 \n" ); document.write( "(x+9)(x-6)=0 \n" ); document.write( "x=-9 or 6 \n" ); document.write( "Throwing out the negative answer, we get the upstream speed of the canoe to be 6 kph, and the downstream speed to be 9 kph.. \n" ); document.write( " |