A train running at the speed of 27 km/hr crosses a post in 20 seconds. What is the length of the train?
Choose the correct choice from the following:  A) 200  B) 150  C) 300  D) 175  E) 250
Speed=(27x5/18)=7.5 m/sec.   Length of the train=(Speed x Time).   Length of the train=7.5 x20	m = 150 m.   Answer: 150
<result>B</result>
A train running at the speed of 27 km/hr crosses a post in 20 seconds. What is the length of the train?