document.write( "Question 888712: A train 1 km long is travelling at a constant speed of 20 km/hour. It enters the tunnel which is 1 km long at 1:00 p.m. At what time does the rear of the train emerge from the tunnel? \n" ); document.write( "
Algebra.Com's Answer #537639 by lwsshak3(11628)\"\" \"About 
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A train 1 km long is travelling at a constant speed of 20 km/hour. It enters the tunnel which is 1 km long at 1:00 p.m. At what time does the rear of the train emerge from the tunnel?
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\n" ); document.write( "travel time=distance/speed
\n" ); document.write( "distance=length of tunnel+length of train=1+1=2 km
\n" ); document.write( "travel time=2/20=1/10 of an hour or 6 min
\n" ); document.write( "At what time does the rear of the train emerge from the tunnel? 1:06 p.m.
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