A train 250 m long passed a pole in 10 sec. How long will it take to pass a platform 1250 m long? Choices.
A) 60 sec B) 90 sec C) 120 sec D) 150 sec E) 180 sec

Rationale: speed = 250 / 10 = 25 m / sec . required time = ( 250 + 1250 ) / 25 = 60 sec answer : a
Answer: A