A train 120 m long running at 60 kmph crosses a platform in 35 sec. What is the length of the platform?  Choose the correct choice:
A) 338  B) 277  C) 463  D) 456  E) 271

Rationale: "d = 60 * 5 / 18 = 35 = 583 – 120 = 463 answer : c"
Answer: C