Final answer:
The average speed of Jack Bruton and Jenna Yeager flying around the world is 115.74 mph.
Step-by-step explanation:
To find the average speed, we divide the total distance by the total time taken:
Average Speed = Total Distance / Total Time
In this case, the total distance is 24,986.73 miles and the total time is 216.06 hours. So, the average speed is:
Average Speed = 24,986.73 miles / 216.06 hours = 115.74 mph
Therefore, the correct answer is Option A: 115.74 mph.