Multiple choice

A 141.5 m. long train crosses a platform in 39 seconds at a speed of 57 km / h. What is the length of the platform?

  1. 476 m.

  2. 586 m.

  3. 613.5 m.

  4. 461 m.
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A Correct answer
Explanation

Convert speed to m/s: 57 km/h = 57 × (1000/3600) = 15.83 m/s. Distance covered in 39 seconds = 15.83 × 39 = 617.5 m. This distance equals train length + platform length. Platform length = 617.5 - 141.5 = 476 m.

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