document.write( "Question 1066669: a train can travel 1km/min,there is a tunnel of length 1km then how much time it will take to cross the tunnel? \n" ); document.write( "
Algebra.Com's Answer #681881 by ikleyn(52813)\"\" \"About 
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\n" ); document.write( "On the train crossing a tunnel see the lesson\r
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