Answer:
To find the average speed of the passenger jet, we need to divide the distance traveled by the time it took to travel that distance.
Average speed = distance / time
In this case, the distance is 1,213 miles and the time is 2.7 h.
Average speed = 1213 miles / 2.7 h = 449.6 miles/h
So the average speed of the passenger jet is 449.6 miles per hour.