A 300 m long train crosses a platform in 36 sec while it crosses a signal pole in 18 sec. What is the length of the platform?	Choose the correct answer:	A) 286 m	B) 350 m	C) 277 m	D) 278 m	E) 300 m
Speed = 300/18 = 50/3 m/sec.   Let the length of the platform be x meters.   Then, (x + 300)/36 = 50/3   x = 300 m.   Answer:300 m
<result>E</result>
A 300 m long train crosses a platform in 36 sec while it crosses a signal pole in 18 sec. What is the length of the platform?