To calculate the time it takes for the bus to complete the journey, we divide the distance traveled by the average speed.
Distance = 66 km
Average speed = 24 km/h
Time = Distance / Average speed
Time = 66 km / 24 km/h
Calculating the division:
Time = 2.75 hours
Therefore, the journey takes 2.75 hours.
The correct answer is c. 2.75 hours.