document.write( "Question 625909: Fred has 5 hours at his disposal. How far (in miles) can he ride his bicycle, going at 10 miles per hour, and returning by the same route at 4 miles per hour? \n" ); document.write( "

Algebra.Com's Answer #393884 by Edwin McCravy(20060) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "The other tutor just found the two times, not the distances.\r\n" );
document.write( "You'd have to multiply them by the rates to get the distances.\r\n" );
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document.write( "Make this DRT chart:\r\n" );
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document.write( "          DISTANCE    RATE    TIME = }\r\n" );
document.write( "going        x         10         x/10 \r\n" );
document.write( "coming       x          4         x/4\r\n" );
document.write( "total       2x                     5\r\n" );
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document.write( "                    +  = 5\r\n" );
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document.write( "Multiply through by 20\r\n" );
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document.write( "       20· + 20· = 20·5\r\n" );
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document.write( "            2x + 5x = 100\r\n" );
document.write( "                 7x = 100\r\n" );
document.write( "                  x =  =  miles\r\n" );
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document.write( "So he will ride a total of  miles\r\n" );
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document.write( "Edwin

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