A goods train runs at a speed of 72 kmph and crosses a 250 m long platform in 26 seconds.What is the length of the goods train? Choose one:
A) 230 m
B) 240 m
C) 260 m
D) 270 m
E) 250 m

Rationale: "s = 250 + x / t 72 * 5 / 18 = 250 + x / 26 x = 270 answer : d"
Answer: D