A goods train runs at a speed of 72 kmph and crosses a 280 m long platform in 26 seconds.What is the length of the goods train? Options:
A) 230 m
B) 240 m
C) 260 m
D) 270 m
E) 250 m

Rationale: "s = 280 + x / t 72 * 5 / 18 = 280 + x / 26 x = 240 answer : b"
Answer: B