Multiple choice

A train crosses a platform in 25 seconds. The length of the platform is 260 metres. What is the length of the train?

  1. 420m

  2. 450m

  3. 480m

  4. Cannot be determined

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To find the length of the train, we need both the time taken to cross the platform AND the speed of the train. The distance covered when a train crosses a platform equals (train length + platform length). Here we only know the time (25 seconds) and platform length (260m), but the train's speed is unknown. Without speed or any additional information (like the time to pass a pole), we cannot determine the train's length uniquely.

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