Multiple choice

A train crosses a 300 meter long platform in 30 seconds and a pole in 10 seconds. Calculate the length of the train in meters.

  1. 170 m

  2. 180 m

  3. 150 m

  4. 120 m

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

Let train length = L meters and speed = S m/s. Crossing a pole: L = S×10, so S = L/10. Crossing platform: L+300 = S×30. Substituting: L+300 = (L/10)×30 = 3L. So 300 = 2L, L = 150m.

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