Final answer:
The question asks for the percentage increase in average miles flown per hour over the years, which requires initial and final average miles per hour data that is not provided; therefore, it is not possible to answer this question accurately.
Step-by-step explanation:
To find the percentage increase in average miles flown per hour over the years, we would need two key pieces of data: the initial average miles flown per hour and the final average miles flown per hour. With these numbers, we could calculate the percentage increase using the formula:
Percentage Increase = ((Final Average - Initial Average) / Initial Average) x 100%
Unfortunately, the provided information does not specify these exact figures. There are various examples related to speeds and mileage, such as the example of the train travelling 80 miles and another concerning a car's gas mileage, but none of these examples give us the direct data required to calculate the percentage increase in miles flown per hour. Therefore, we cannot determine the percentage increase and answer this question without the necessary initial and final values.