Multiple choice

Train A of length 140 m can cross a platform of length 180 m in 16 seconds and the ratio of speed of train B and train A is 3: 2. Find the length of train B if train B crosses a man in 15 seconds.

  1. 350 m

  2. 450 m

  3. 295 m

  4. 300 m

  5. 360 m
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Train A speed: (140 + 180)/16 = 320/16 = 20 m/s. Train B speed: (3/2) × 20 = 30 m/s. Train B crosses a man (stationary object) in 15 seconds, so its length = 30 × 15 = 450 m. Option B is correct.

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