A train 1020 m long running at 102 kmph crosses a platform in 50 sec. What is the length of the platform? Choose the correct choice from the following:
A) 287
B) 298
C) 396
D) 726
E) 267

Rationale: "d = 102 * 5 / 18 = 50 = 1416 â € “ 1020 = 396 answer : c"
Answer: C