document.write( "Question 1147376: A train having a length pf 400m, travelling at speed of 15m/s crosses the platform in one min. What is the length of the platform? \n" ); document.write( "
Algebra.Com's Answer #768683 by ikleyn(52787)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "In one minute, the front of the train moves forward  from the one end of the platform by  15 m/s * 60 seconds = 900 meters.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Since the problem says that the train passes (passes -- not crosses (!) ) the platform in 1 minute, it means that \r\n" );
document.write( "\r\n" );
document.write( "the rear of the train comes alongside with the other end of the platform.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Therefore, the length of the platform is  900 - 400 = 500 meters.\r\n" );
document.write( "
\r
\n" ); document.write( "\n" ); document.write( "Solved, answered and explained.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "-------------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "To see other similar solved problem, look into the lessons\r
\n" ); document.write( "\n" ); document.write( "    - A train passing a telegraph post and passing a bridge \r
\n" ); document.write( "\n" ); document.write( "    - A train passing a platform \r
\n" ); document.write( "\n" ); document.write( "    - A train passing through a tunnel \r
\n" ); document.write( "\n" ); document.write( "    - A light-rail train passing a walking person \r
\n" ); document.write( "\n" ); document.write( "    - A train passing another train \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Come again to the forum soon to learn something new (!)\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );