Final answer:
The average speed of the train is 50 kilometers per hour.
Step-by-step explanation:
To find the average speed, we divide the total distance traveled by the total time taken. In this case, the train traveled 250 kilometers in 5 hours. So, the average speed is:
Average speed = total distance / total time = 250 km / 5 h = 50 km/h
Therefore, the average speed of the train is 50 kilometers per hour.