document.write( "Question 490841: You row upstream at 5 mph and downstream at 11 mph. You row upstream until you get tired and then downstream to your starting point. How far did you row if the entire trip took 4 hours? \n" ); document.write( "

Algebra.Com's Answer #334392 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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You row upstream at 5 mph and downstream at 11 mph.
\n" ); document.write( " You row upstream until you get tired and then downstream to your starting point. How far did you row if the entire trip took 4 hours?
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\n" ); document.write( "Let d = the one-way dist rowed
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\n" ); document.write( "Write a time equation, time = dist/speed
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\n" ); document.write( "up time + down time = 4 hrs
\n" ); document.write( " $\"d%2F5\"$ + $\"d%2F11\"$ = 4
\n" ); document.write( "multiply eq by 55, results
\n" ); document.write( "11d + 5d = 55(4)
\n" ); document.write( "16d = 220
\n" ); document.write( "d = $\"220%2F16\"$
\n" ); document.write( "d = 13.75 distance one way, or total of 2(13.75) = 27.5 miles
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\n" ); document.write( "Check your solution by finding the actual time each way
\n" ); document.write( "13.75/5 = 2.75 hrs
\n" ); document.write( "13.75/11 =1.25 hrs
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\n" ); document.write( "total time: 4 hrs \n" ); document.write( "

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