Given a train running at a speed of 72 km/h.
We have to find the time taken to cover a distance of 300 km.
We can use the relation between distance, time and speed to solve this.
speed = distance
time
time : distance
speed
The time taken will be:
t = 300 h
72
We can simplify it further to get:
t = 25 h
6
Thus, the time taken is 25/6 hours.