Multiple choice

A 330 meter long train crosses another 150 meter long train coming from opposite to it in 45 seconds. If the speed of a train is 24 km/hr. What is the speed of second train?

  1. 12 km/hr.

  2. 14.4 km/hr.

  3. 36 km/hr.

  4. 45 km/hr.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When trains move in opposite directions, relative speed is the sum of individual speeds. Total distance = 330 + 150 = 480 m. Time = 45 seconds. Relative speed = 480/45 = 10.67 m/s = 38.4 km/hr. If one train's speed is 24 km/hr, the other train's speed = 38.4 - 24 = 14.4 km/hr. Option B is correct.

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