document.write( "Question 162808: A train left Denver bound for Omaha at speed of 80 miles per hour, and at the same time another train left at Omaha bound for Denver at a speed of 100 miles per hour. When the trains passed each other, what fraction of the trip had the train from Denver completed? \n" ); document.write( "
Algebra.Com's Answer #120012 by checkley77(12844)\"\" \"About 
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Assume they have been on the rail for 1 hour thus they ahve covered a total of (80+100=180) miles & the Denver train has covered 80 miles.
\n" ); document.write( "Thus:
\n" ); document.write( "80/(80+100)=80/180=.444=44.4% or the trip.
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