Alright, here is my problem:

30 buses are to be used to transport 2000 refugees from Location A to Location B. Each bus has 80 seats. Assume one seat per passenger. Prove that one of the buses will have at least 14 empty seats.

Now.. which means we wont need to use the 30 buses or.. we will have a certain amount of people in each bus to use all of the buses. But.. where do I go from here? Any help would be appreciated!