document.write( "Question 879445: Two trains are traveling toward each other on parallel tracks
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Algebra.Com's Answer #530785 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Two trains are traveling toward each other on parallel tracks\r\n" );
document.write( "They start at the same time 300 miles apart\r\n" );
document.write( "Train A is traveling east at 70 mph \r\n" );
document.write( "Train B is traveling west at 50 mph.\r\n" );
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document.write( "(a) How long will it take them to meet?\r\n" );
document.write( "(b) How far will Train A have traveled when they meet?\r\n" );
document.write( "(c) How far will Train B have traveled when they meet?\r\n" );
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document.write( "Make this chart.  The distance A goes until the meet and the\r\n" );
document.write( "distance B goes before they meet is 300 miles total. The time \r\n" );
document.write( "till they meet is the same for both trains.  Let the time be t,\r\n" );
document.write( "and put in their rates:\r\n" );
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document.write( "                distance     rate     time\r\n" );
document.write( "faster train                  70        t\r\n" );
document.write( "slower train                  50        t\r\n" );
document.write( "total              300\r\n" );
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document.write( "Now use distance = rate × time to fill in the distances:\r\n" );
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document.write( "                distance     rate     time\r\n" );
document.write( "faster train      70t         70        t\r\n" );
document.write( "slower train      50t         50        t\r\n" );
document.write( "total             300\r\n" );
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document.write( "The equation comes from 70t+50t = 300\r\n" );
document.write( "                           120t = 300\r\n" );
document.write( "                              t = \"300%2F120\" = \"5%2F2\" = \"2%261%2F2\" hours.\r\n" );
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document.write( "That's the answer to (a).\r\n" );
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document.write( "The answer to (b) is 70t or 70(5/2) = 175 miles.\r\n" );
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document.write( "The answer to (C) is 50t or 50(5/2) = 125 miles.\r\n" );
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document.write( "Edwn
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