Multiple choice

280 m and 350 m long two trains are moving in opposite direction on a parallel track. If their speeds are 38 km/hr and 25 km/hr respectively, in what time will they cross each other ?

  1. 33 seconds

  2. 36 seconds

  3. 38 seconds

  4. 40 seconds

  5. 30 seconds
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When trains move in opposite directions, their relative speed is the sum: 38 + 25 = 63 km/hr = 63 × 5/18 = 17.5 m/s. Total distance to cover = sum of lengths = 280 + 350 = 630 m. Time = Distance/Speed = 630/17.5 = 36 seconds.

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