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)![]() ![]() ![]() You can put this solution on YOUR website! 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( "*** \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. \n" ); document.write( " |