document.write( "Question 1151193: I drove to my parents' house at $40$ miles per hour. If I had driven 30 miles an hour instead, then I would have gotten there 20 minutes later. How many miles did I drive? \n" ); document.write( "
Algebra.Com's Answer #772840 by josgarithmetic(39623)\"\" \"About 
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document.write( "SPEED           TIME         DISTANCE\r\n" );
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document.write( "40              d/40           d\r\n" );
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document.write( "30              d/30           d\r\n" );
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document.write( "difference      1/3\r\n" );
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\n" ); document.write( "Twenty minutes is one-third of an hour.\r
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\n" ); document.write( "\n" ); document.write( "\"d%2F30-d%2F40=1%2F3\" \n" ); document.write( "
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