document.write( "Question 653017: Two cars are headed directly toward each other at rates of 20 mph and 80 mph. How many miles apart are they 2 min before impact?\r
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Algebra.Com's Answer #408212 by Edwin McCravy(20060) $\"\"$ $\"About$

You can put this solution on YOUR website!
Two cars are headed directly toward each other at rates of 20 mph and 80 mph. How many miles apart are they 2 min before impact?
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document.write( "They're approaching each other at 20+80 or 100 miles per hour, or 100 miles per\r\n" );
document.write( "60 minutes, or 10 miles per 6 minutes, or 5 miles per 3 minutes, 2/3 of 5 miles\r\n" );
document.write( "in 2/3 of 3 minutes which is 2 minutes.  And 2/3 of 5 miles is 10/3 or 3 1/3\r\n" );
document.write( "miles.\r\n" );
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document.write( "Or you can make this table, using 2 minutes as 2/60 or 1/30th of an hour.\r\n" );
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document.write( "             Rate ×  Time  = Distance \r\n" );
document.write( "Slow car      20     1/30      2/3\r\n" );
document.write( "Fast car      80     1/30      8/3\r\n" );
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document.write( "                      Total = 10/3 = 3 1/3 miles\r\n" );
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document.write( "Edwin

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