A 300 m long train crosses a platform in 27 sec while it crosses a signal pole in 18 sec. What is the length of the platform?
Select:
A) 286 m  B) 350 m  C) 277 m  D) 278 m  E) 150 m
Speed = 300/18 = 50/3 m/sec.   Let the length of the platform be x meters.   Then, (x + 300)/27 = 50/3   x = 150 m.   Answer:150 m
<result>E</result>
A 300 m long train crosses a platform in 27 sec while it crosses a signal pole in 18 sec. What is the length of the platform?