Multiple choice

A train of length 350 m crosses a bridge of length 250 m in 20 seconds. What is the speed of the train (in km/h)?

  1. 88

  2. 72

  3. 108

  4. 95
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Total distance = 350 + 250 = 600 m. Speed = distance / time = 600 / 20 = 30 m/s. Converting to km/h: 30 * (18/5) = 108 km/h.

AI explanation

The total distance covered while crossing the bridge is the sum of the train's length and the bridge's length: 350 m + 250 m = 600 m. The speed of the train equals total distance divided by time, which is 600 m / 20 seconds = 30 m/s. Converting this speed to km/hr gives 30 x (18/5) = 108 km/h. The result is 108.

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