Multiple choice

A 280 metre long train moving with an average speed of 108 km/h crosses a platform in 12 seconds. A man crosses the same platform in 10 seconds. What is the speed of the man?

  1. 5 m/s

  2. 8 m/s

  3. 12 m/s

  4. Cannot be determined

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

Speed of train = 108 km/hr = (108*5/18) = 30 m/sec Let the length of the platform be x meters Then, x + 280 m = 360 m x = (360-280) m = 80 m Then, the speed of man = (80 m)/ (10 s) = 8 m/s

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