A train 275 m long, running with a speed of 90 km / hr will pass a tree in	Choose the correct answer
A) 11 sec
B) 15 sec
C) 16 sec
D) 20 sec
E) None
Sol.   Speed = (90 x 5/18) m/sec.   = 25 m / sec.   Time taken = (275 x 1/25) sec = 11 sec   11 secnswer 11 sec
<result>A</result>
A train 275 m long, running with a speed of 90 km / hr will pass a tree in