Final answer:
The train traveled for approximately 3.33 hours.
Step-by-step explanation:
To calculate the time it took for the train to travel a distance, we can use the formula:
time = distance / velocity
Given that the train traveled a distance of 500 km and had a velocity of 150 km/hr, we can substitute these values into the formula:
time = 500 km / 150 km/hr = 3.33 hr
Therefore, the train traveled for approximately 3.33 hours.