document.write( "Question 1071428: In the morning Maria drove to a business appointment at 70 mph. Her average speed on the returning in the afternoon was 60 mph. The return trip took 1/3 hour longer because of heavy traffic. How far did she travel to appointment? \n" ); document.write( "

Algebra.Com's Answer #686381 by ikleyn(52856) $\"\"$ $\"About$

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document.write( "Let  be the distance in one (in each) direction, in miles.\r\n" );
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document.write( "Then your governing equation is\r\n" );
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document.write( " = .\r\n" );
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document.write( "It is the \"time equation\". Each member of the equation is time.\r\n" );
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document.write( "To solve it, multiply both sides by 60*70. You will get\r\n" );
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document.write( "70D - 60D = 1400,  ---> 10D = 1400  ---> D =  = 140.\r\n" );
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document.write( "Answer.  The distanse is 140 miles.\r\n" );
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