A 300 m long train crosses a platform in 38 sec while it crosses a signal pole in 18 sec. What is the length of the platform?	Choose the correct choice from the following answers: A) 288 B) 350 C) 889 D) 276 E) 333

Rationale: "speed = 300 / 18 = 50 / 3 m / sec . let the length of the platform be x meters . then , ( x + 300 ) / 38 = 50 / 3 3 x + 900 = 1900 = > x = 333 m . answer : e"
Answer: E