1) A train travelling at the speed of 45 km/hr crosses a platform in 15 seconds. What is the length of the train ? A) 130 m B) 140 m C) 112 m D) 115 m E) Cannot be determined Answer: Option EExplanation:When a train crosses a platform, it covers a distance equal to the sum of its length and that of platform .Here length of platform is not given. Hence length of train cannot be determined.
