Multiple choice general knowledge

A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?

  1. 400 metres

  2. 200 metres

  3. 240 metres

  4. 300 metres
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Train speed = 54 km/hr = 15 m/sec. In 20 sec, train passes a man, so train length = 15 × 20 = 300 m. In 36 sec, train passes platform, so train + platform length = 15 × 36 = 540 m. Platform length = 540 - 300 = 240 m.

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