A train 280 m long, running with a speed of 72 km / hr will pass a tree in Pick one
A) 14 sec  B) 15 sec  C) 16 sec  D) 20 sec  E) None
Sol.   Speed = (72 x 5/18) m/sec.   = 20 m / sec.   Time taken = (280 x 1/20) sec = 14 sec   14 secnswer 14 sec
<result>A</result>
A train 280 m long, running with a speed of 72 km / hr will pass a tree in