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

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