document.write( "Question 931270: A train leaves Chicago at 115 miles per hour towards Denver. Another train leaves Denver at 105 miles per hour towards Chicago. If the distance between the cities is 1200 miles, how long will it be before the trains meet? \n" ); document.write( "
Algebra.Com's Answer #565510 by TimothyLamb(4379)\"\" \"About 
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relative speed of trains:
\n" ); document.write( "s = 115 + 105
\n" ); document.write( "s = 220 mph
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\n" ); document.write( "time when the trains meet:
\n" ); document.write( "s = d/t
\n" ); document.write( "t = d/s
\n" ); document.write( "t = 1200/220
\n" ); document.write( "t = 5.45454545455
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "the trains will meet 5.455 hours after they depart
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