A train 200 m long passed a pole in 18 sec. How long will it take to pass a platform 600 m long? Choose the most appropriate option: A) 12 sec B) 73 sec C) 74 sec D) 21 sec E) 46 sec
Speed = 200/18   = 11 m/sec.   Required time = (200 + 600)/11   = 72.7 sec.   Answer: 73 sec
<result>B</result>
A train 200 m long passed a pole in 18 sec. How long will it take to pass a platform 600 m long?