Answer:
70 miles per hour
Step-by-step explanation:
To find the miles per hour you must set up an equation and put the total miles traveled over how long it took to cover that distance.
455 miles/ 6 and a half (6.5) hours
From there, you can simply divide.
455/6.5 = 70
Thus, you get 70 miles an hour.
You can check this by multiplying 70 by 6.5 to get 455.