document.write( "Question 270641: A man is walking at an average speed of 4 miles per hour along a railroad track. A train going the same way at a speed of 30 mph requires 5 seconds to pass the man. How long is the train? \n" ); document.write( "

Algebra.Com's Answer #198226 by josmiceli(19441) $\"\"$ $\"About$

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If the man could somehow run 30 mi/hr, the train
\n" ); document.write( "would not be able to pass him. If the man were standing still
\n" ); document.write( "the length of the train would be
\n" ); document.write( " $\"30%2A%285%2F3600%29+=+15%2F360\"$ mi
\n" ); document.write( " $\"15%2F360+=+1%2F24\"$ mi
\n" ); document.write( "I have to subtract the man's speed from the train's speed
\n" ); document.write( " $\"%2830+-+4%29%2A%285%2F3600%29+=+26%2A%285%2F3600%29\"$
\n" ); document.write( " $\"130%2F3600+=+13%2F360\"$ mi
\n" ); document.write( " $\"13%2F360+%2A+5280+=+190.67\"$ ft
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