Answer:
Eight and a Half hours (8.5)
Explanation:
So when looking at this it says that he drives at a constant speed, so his speed won't change. So If he is trying to drive 306 miles at 36mph, we would divide his speed by the distance.
306/36
And when we do this, we get 8.5. So it would take him eight and a half hours to drive 306 miles.