Multiple choice

A train travelling at a speed of 48 km/h crosses a 360 m long platform in 39 seconds. How long was the train?

  1. 240 m.

  2. 160 m.

  3. 140 m.

  4. 180 m.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Train speed = 48 km/h = 48 × (5/18) = 40/3 m/s. Distance covered = platform length + train length = 360 + L meters. Time = 39 seconds. Using Distance = Speed × Time: 360 + L = (40/3) × 39 = 520. So L = 520 - 360 = 160 m. Convert km/h to m/s by multiplying by 5/18.

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