Answer:
6 boats
Explanation:
Consider this, there are 10 boats from South Carolina and 10 from other sates.
So, lets make ratio with is 1/1 because for every 1 boat from other states, there is 1 boat for South Carolina.
There are 12 boats, divide them evenly to get the answer of 6 boats from South Carolina. The reason for dividing by two was due to the fact that half for South Carolina and half from other states. Now there is your answer.