document.write( "Question 954712: How long is the train?\r
\n" ); document.write( "\n" ); document.write( "A train moving 45 kilometres per hour meets and is passed by a train moving 36 kilometres per hour. A passenger in the first train sees the second train take 6 seconds to pass him. How long is the second train?
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Algebra.Com's Answer #583112 by ankor@dixie-net.com(22740)\"\" \"About 
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A train moving 45 kilometres per hour meets and is passed by a train moving 36 kilometres per hour.
\n" ); document.write( " A passenger in the first train sees the second train take 6 seconds to pass him.
\n" ); document.write( " How long is the second train?
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\n" ); document.write( "The relative speed of the two trains is 45 + 36 = 81 km/h
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\n" ); document.write( "At this speed how far can it go in 6 sec
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\n" ); document.write( "\"%2881%2A1000%29%2F3600\" = 22.5 meter/sec
\n" ); document.write( "6 * 22.5 = 135 meters is the length of the 2nd train
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