document.write( "Question 83155: A kayak wint up a river and back in 6 hours. If their rate up the river was 2 miles per hour and back 4 miles per hour, how far did they go up the river? \n" ); document.write( "

Algebra.Com's Answer #59675 by JDorrin(1) $\"\"$ $\"About$

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since the kayak goes one directions 2mph and the other direction 4 mph, it is known that the kayak goes twice the speed on the way back, so it takes half the time. It is also known that the kayak is traveling for 6 hours. Therefore, the kayak spends twice as much time going up than coming back. \r
\n" ); document.write( "\n" ); document.write( "2x+x=6hours x=2
\n" ); document.write( "The kayak spends 2x, or 4 hours, going up and x, or 2, hours coming back\r
\n" ); document.write( "\n" ); document.write( "Traveling 4 hours at 2 mph will equal 8 miles
\n" ); document.write( "Traveling 2 hours at 4 mph will equal 8 miles\r
\n" ); document.write( "\n" ); document.write( "The kayak travels a total of 8 miles up the river and 8 miles back \n" ); document.write( "

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