document.write( "Question 823831: lauren paddles her kayak 8 miles upstream in 4 hours, she turns around and paddles downstream to her starting point in 2 hours. what is the rate at which lauren paddles in still water? what is the rate of the rivers current? \n" ); document.write( "
Algebra.Com's Answer #495844 by TimothyLamb(4379)\"\" \"About 
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\n" ); document.write( "s = d / t
\n" ); document.write( "---
\n" ); document.write( "x = kayak speed
\n" ); document.write( "y = water speed
\n" ); document.write( "---
\n" ); document.write( "upstream:
\n" ); document.write( "x - y = 8/4 = 2
\n" ); document.write( "---
\n" ); document.write( "downstream:
\n" ); document.write( "x + y = 8/2 = 4
\n" ); document.write( "---
\n" ); document.write( "x - y = 2
\n" ); document.write( "x + y = 4
\n" ); document.write( "---
\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
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\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "x = kayak speed = 3 mph
\n" ); document.write( "y = water speed = 1 mph
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
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