A: 18 km in 10 min means 18 * 10 = 180 km. If it takes 9 sec to pass a telegraph post then the length of the train is 180 * 9 = 270 m. The answer is (C).
Answer the following multiple choice question with options (a), (b), (c), (d), (e) by reasoning step-by-step.
Q:A train covers a distance of 18 km in 10 min. If it takes 9 sec to pass a telegraph post, then the length of the train is? Answer Choices: A)120m B)180m C)270m D)220m E)280m