Answer:
3.75 hours
Step-by-step explanation:
The formula for finding time (how long) is t = s/v where s is distance, v is speed and t is time.
We know that the distance that a bus wants to travel is 150 km with an average speed of 40 km/h. Therefore, substitute s = 150 km and v = 40 km/h in the formula:

Therefore, it’ll take about 3.75 hours for a bus to travel 150 km distance.