document.write( "Question 1091996: A freight train travels north at a rate of 50mph. A passenger train leaves 4 hours later on a parallel track and travels north at 90mph. How long will it take the passenger train to catch up to the freight train? \n" ); document.write( "

Algebra.Com's Answer #706516 by greenestamps(13198) $\"\"$ $\"About$

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In the 4 hours that the first train travels before the second train starts, the first train travels 4*50 = 200 miles.

\n" ); document.write( "The second train travels 40mph faster than the first train (90 minus 50).

\n" ); document.write( "The number of hours the second train needs to overtake the first train is the number of hours it needs to make up 200 miles, when it does so at a rate of 40 miles each hour:
\n" ); document.write( " $\"200%2F40+=+5\"$

\n" ); document.write( "It takes the second train 5 hours to overtake the first. \n" ); document.write( "

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