document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=270641>Question 270641</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 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? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #198225 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=198225\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 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?\r<BR>\n" );
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document.write( "let  the length of the train be x\r<BR>\n" );
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document.write( "The speed of the train is 30 mph\r<BR>\n" );
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document.write( "The speed of the man is 4mph\r<BR>\n" );
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document.write( "they are travelling in  the same direction\r<BR>\n" );
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document.write( "the effective speed of the train will be 30-4 = 26 mph\r<BR>\n" );
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document.write( "If the end of the train has to cross the man then it has to travel the distance of the length of the train ie: x\r<BR>\n" );
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document.write( "Distance = x <BR>\n" );
document.write( "speed = 26 mph<BR>\n" );
document.write( "Time taken = 5 seconds\r<BR>\n" );
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document.write( "1 mile = 5280 feet<BR>\n" );
document.write( "1 hour = 3600 seconds \r<BR>\n" );
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document.write( "1mile / hour =  5280 feet / 3600 seconds  = 1.47 feet / second\r<BR>\n" );
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document.write( "1 mph = 1.47 feet / second<BR>\n" );
document.write( "26mph = 26*1.47 feet /second = 38.22 feet / second\r<BR>\n" );
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document.write( "38.22feet/second *5 second = 191.1 feet  which is the length of the train<BR>\n" );
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