Multiple choice

Two trains are running at 80 km/hr and 70 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 36 seconds. What is the length of the fast train?

  1. 200m

  2. 300m

  3. 100m

  4. 250m
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When trains move in the same direction, relative speed is the difference: 80 - 70 = 10 km/hr = 25/9 m/s. Distance = speed × time = (25/9) × 36 = 100m. This is the fast train's length.

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