document.write( "Question 984733: A man travels 40 mph to his friends house. When he goes back on the same route he travels 45 mph. It was a four hour round-trip. How far did he travel \n" ); document.write( "
Algebra.Com's Answer #605523 by josgarithmetic(39620)\"\" \"About 
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document.write( "GOING         r             ()          d\r\n" );
document.write( "RETRG         v             ()          d\r\n" );
document.write( "Total                       t\r\n" );
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document.write( "r=40,v=45,t=4\r\n" );
document.write( "unknown variables: d\r\n" );
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\n" ); document.write( "\n" ); document.write( "Basic uniform rates rule for travel, RT=D relating rate, time, distance. Use the idea to fill the missing time expressions.\r
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document.write( "GOING         r             d/r          d\r\n" );
document.write( "RETRG         v             d/v          d\r\n" );
document.write( "Total                       t\r\n" );
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\n" ); document.write( "\n" ); document.write( "Equation from the data is \"d%2Fr%2Bd%2Fv=t\".\r
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\n" ); document.write( "\n" ); document.write( "STEPS TO SOLVE FOR d:\r
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\n" ); document.write( "\n" ); document.write( "\"d%281%2Fr%2B1%2Fv%29=t\"
\n" ); document.write( "\"d%28v%2Br%29%2F%28rv%29=t\"
\n" ); document.write( "\"highlight%28d=rvt%2F%28v%2Br%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "Substitute and evaluate. \n" ); document.write( "
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