document.write( "Question 1013187: kristen and katie take a hike on a mountain trail and return on that same trail to the campground from which they started. If they were gone six hours and their average rates were 4mph out and 2mph back, how far along the trail did they hike? \n" ); document.write( "

Algebra.Com's Answer #629408 by josgarithmetic(39632) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "            rate        time         distance\r\n" );
document.write( "OUT          4           x            d\r\n" );
document.write( "BACK         2           y            d\r\n" );
document.write( "Total                    6           2d\r\n" );
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\n" ); document.write( "\n" ); document.write( " $\"system%284x=d%2C2y=d%2Cx%2By=6%29\"$ -------three equations in three unknown variables, x, y, d.\r
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\n" ); document.write( "\n" ); document.write( "To begin handling the system, $\"y=6-x\"$ ;
\n" ); document.write( " $\"system%284x=d%2C2%286-x%29=d%29\"$
\n" ); document.write( "...and maybe you can do the rest.\r
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\n" ); document.write( "\n" ); document.write( "---
\n" ); document.write( "d=8 \n" ); document.write( "

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