Multiple choice

A train running at the speed of 15 m/s takes 20 seconds to pass a man running at the speed of 5 m/s in the same direction. Find the length of the train. (in meters)

  1. 240

  2. 200

  3. 220

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

Relative speed = 15 - 5 = 10 m/s (same direction, so subtract). Distance = length of train = relative speed × time = 10 × 20 = 200 meters. The train is 200 meters long.

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