A train running at the speed of 20 km/hr crosses a post in 10 seconds. What is the length of the train?
Choose one
A) 150  B) 250  C) 415  D) 200  E) 312
Speed=(20x5/18)=50/9 m/sec.   Length of the train=(Speed x Time).   Length of the train=50/9 x10m=200 m.   Answer: 200
<result>D</result>
A train running at the speed of 20 km/hr crosses a post in 10 seconds. What is the length of the train?