Answer:
825 km/hr
Step-by-step explanation:
To find the average speed, you simply have to divide the distance by the time taken.
Distance travelled = 6600 km
Time Taken: 8 hours
Average speed = 6600 ÷ 8 or 6600/8 = 825 km/hr
Your final answer would be the plane travelled at an average speed of 825 kilometres per hour.