Multiple choice

A train travelling at 108 km/h crosses a bridge of length 150 m in 10 seconds. Find the length of train ?

  1. 100 m

  2. 200 m

  3. 250 m

  4. 150 m

  5. 300 m
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Speed = 108 km/h = 108 * 5/18 = 30 m/s. Distance = Speed * Time = 30 * 10 = 300 m. Total distance = Length of train + Length of bridge. 300 = L + 150, so L = 150 m.

AI explanation

Using the formula for a train crossing a bridge, the total distance covered is the sum of the train's length and the bridge's length. First, convert the train's speed to meters per second by multiplying 108 by 5/18, which gives 30 m/s. The total distance covered in 10 seconds is 30 multiplied by 10, equaling 300 meters. Subtracting the bridge length of 150 meters from this total distance gives the train's length of 150 meters.

Keep practicing — related questions