Multiple choice

A 476 m long train crosses a pole in 14 seconds. The length of a platform is equal to the distance covered by train in 20 seconds. A man crosses the platform in 7 minutes and 5 seconds. What is the speed of man in m/s?

  1. 1.8 m/s

  2. 1.4 m/s

  3. 1.6 m/s

  4. 2 m/s

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

Train length = 476 m, crosses pole in 14 seconds. Speed = 476/14 = 34 m/s. In 20 seconds, train covers 34 × 20 = 680 m = platform length. Man crosses 680 m in 7 minutes 5 seconds = 425 seconds. Man's speed = 680/425 = 1.6 m/s.

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