document.write( "Question 1002557: Alvin paddled for 5 hours with a 5 km/hour current to reach a campsite. The return trip against the same current took 10 hours. Find the speed of Alvin’s canoe without a current. \n" ); document.write( "
Algebra.Com's Answer #619428 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
Alvin paddled for 5 hours with a 5 km/hour current to reach a campsite. The return trip against the same current took 10 hours. Find the speed of Alvin’s canoe without a current.\r
\n" ); document.write( "\n" ); document.write( "let x=speed of Alvin’s canoe without a current
\n" ); document.write( "(x+5)=speed of canoe with the current
\n" ); document.write( "(x-5)=speed of canoe against the current
\n" ); document.write( "travel time*speed=distance
\n" ); document.write( "5(x+5)=10(x-5)
\n" ); document.write( "5x+25=10x-50
\n" ); document.write( "5x=75
\n" ); document.write( "x=15\r
\n" ); document.write( "\n" ); document.write( "speed of Alvin’s canoe without a current=15km/hr
\n" ); document.write( "
\n" );