document.write( "Question 1094907: Darren drives to school in rush hour traffic and averages 21 mph. He returns home in mid-afternoon when there is less traffic and averages 42 mph. What is the distance between his home and school if the total traveling time is 1hr30min?
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Algebra.Com's Answer #709475 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "                 SPEED           TIME        DISTANCE\r\n" );
document.write( "GOING            21              d/21         d\r\n" );
document.write( "RETURN           42              d/42         d\r\n" );
document.write( "Total                            1&1/2\r\n" );
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\n" ); document.write( "\"d%281%2F21%2B1%2F42%29=1%261%2F2\"
\n" ); document.write( "Solve for d. \n" ); document.write( "
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