wo trains of equal length , running in opposite directions , pass a pole in 18 and 12 seconds. The trains will cross each other in	Choose one:
A) 14.4 sec
B) 14.9 sec
C) 12.4 sec
D) 14.8 sec
E) 15.4 sec
Explanation:   Let the length of the train be L metres   Speed of first train = \inline \frac{3600}{18}\times L m/hour   Speed of secxond train = \inline \frac{3600}{12}\times L m/hour   When running in opposite directions, relative speed = 200 L + 300 L m/hour   Distance to be covered = L + L = 2L metre   Time taken = \inline \frac{2L}{500L}\times 3600 sec   =14.4 sec   14.4 secnswer: 14.4 sec) 14.4 sec
<result>A</result>
wo trains of equal length , running in opposite directions , pass a pole in 18 and 12 seconds. The trains will cross each other in