A train 270 m long, running with a speed of 108 km / hr will pass a tree in Select.
A) 12 sec B) 9 sec C) 16 sec D) 20 sec E) none

Rationale: "sol . speed = ( 108 x 5 / 18 ) m / sec . = 30 m / sec . time taken = ( 270 x 1 / 30 ) sec = 9 sec answer b"
Answer: B