document.write( "Question 1090428: A 575 meter long train crosses a tunnel of 325 meter in 90 sec. What is the speed of the train in km/h?
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Algebra.Com's Answer #704839 by Edwin McCravy(20060) $\"\"$ $\"About$

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document.write( "Assume that the train is moving from left to right in\r\n" );
document.write( "the drawing above.\r\n" );
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document.write( "The front of the train begins at B and must travel to D.\r\n" );
document.write( "So the front of the train travels the distance of BD in\r\n" );
document.write( "order for the entire train to be completely out of the \r\n" );
document.write( "tunnel.\r\n" );
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document.write( "BD = BC + CD = 325 + 575 = 900 meters.\r\n" );
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document.write( "[Note that you could also do it by saying that the end\r\n" );
document.write( "of the train begins at A and must travel to C.\r\n" );
document.write( "So the end of the train travels the distance of AC in\r\n" );
document.write( "order to be completely out of the tunnel. \r\n" );
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document.write( "AC = AB + BC = 575 + 325 = 900 meters.]\r\n" );
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document.write( "The Distance is 900 meters and the Time = 90 seconds\r\n" );
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document.write( "Edwin

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