A train 280 m long, running with a speed of 36 km / hr will pass a tree in
Choose the correct choice from the following
A) 12 sec  B) 15 sec  C) 16 sec  D) 28 sec  E) none

Rationale: "sol . speed = ( 36 x 5 / 18 ) m / sec . = 10 m / sec . time taken = ( 280 x 1 / 10 ) sec = 28 sec answer d"
Answer: D