A 300 m long train crosses a platform in 39 sec while it crosses a signal pole in 8 sec. What is the length of the platform?	Pick
A) 287 m  B) 350 m  C) 1267 m  D) 1287 m  E) 1162.5 m
Speed = 300/8 = 75/2 m/sec.   Let the length of the platform be x meters.   Then, (x + 300)/39 = 75/2   =&gt; x = 1162.5 m.   Answer:1162.5 m
<result>E</result>
A 300 m long train crosses a platform in 39 sec while it crosses a signal pole in 8 sec. What is the length of the platform?