document.write( "Question 1131014: Melissa drove to the mountains last weekend. There was heavy traffic on the way there and the trip took 8 hours. When Melissa drove home, there was no traffic and the trip only took 5 hours. If her average rate was 21 miles per hour faster on the trip home, how far away does Melissa live from the mountains? \n" ); document.write( "

Algebra.Com's Answer #747611 by josgarithmetic(39620) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "              SPEED        TIME       DISTANCE\r\n" );
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document.write( "GOING         r             8         d\r\n" );
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document.write( "RETURN        r+21          5         d\r\n" );
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\n" ); document.write( "\n" ); document.write( " $\"system%288r=d%2C5%28r%2B21%29=d%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"8r=5r%2B105\"$
\n" ); document.write( " $\"3r=105\"$
\n" ); document.write( " $\"r=35\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"d=35%2A8\"$
\n" ); document.write( " $\"highlight%28d=280%29\"$ \n" ); document.write( "

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