Answer:
720 kilometers.
Explanation:
A plane flew from Chicago to Flagstaff, the distance = 2,190 kilometers
Another plane flew to Oakland, the distance = 2,910 kilometers
Second plane flew farther than first plane.
We have to find the difference between the distance that flew both the plane.
Difference between distance = 2,910 - 2,190 = 720 kilometers
Therefore, second plane flew 720 kilometers farther than the plane that flew to flagstaff.