Speed = 63 * 5/18 = 35/2 m/sec
Time taken = 210 * 2/35 = 12 sec
A train 210 m long, running with a speed of 63 km/hr will pass a tree in?
Options:
[1] 15 sec
[2] 16 sec
[3] 18 sec
[4] 12 sec
[5] 25 sec