A train 280 m long, running with a speed of 36 km / hr will pass a tree in Options:
A) 12 sec B) 15 sec C) 16 sec D) 28 sec E) None
Sol.   Speed = (36 x 5/18) m/sec.   = 10 m / sec.   Time taken = (280 x 1/10) sec = 28 sec   Answer 28 sec
<result>D</result>
A train 280 m long, running with a speed of 36 km / hr will pass a tree in