Multiple choice

A train 300 meters long passes a platform in 30 seconds at a speed of 54 km/h. What is the length of the platform?

  1. 200 meters

  2. 225 meters

  3. 250 meters

  4. 150 meters
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D Correct answer
Explanation

Speed = 54 km/h = 15 m/s. Distance covered in 30s = 15 * 30 = 450 m. Length of platform = Total distance - Train length = 450 - 300 = 150 m.

AI explanation

First, convert the speed from km/h to m/s using the formula 54 multiplied by 5/18, which gives 15 m/s. The total distance covered is the sum of the train's length and the platform's length, so 15 multiplied by 30 equals 450 meters. Subtracting the train's length of 300 meters from this total distance gives a platform length of 150 meters.

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