Answer:
Let's denote the number of adults as A and the number of students as S. We have two equations based on the problem:
1. A + S = 12 (since all 12 seats were filled)
2. 10A + 6S = 980 (since the total proceeds were $980)
We can solve these equations simultaneously to find the values of A and S.
First, we can multiply the first equation by 6 to make the coefficients of S the same in both equations:
6A + 6S = 72
Then, we subtract this new equation from the second equation:
4A = 208
Solving this for A gives A = 52.
Substituting A = 52 into the first equation gives S = 12 - 52 = -40.
Therefore, the solution to the problem is A = 52 adults and S = -40 students.
However, the number of students cannot be negative, so there seems to be a mistake in the problem. The total proceeds of $980 cannot be reached with the given ticket prices and the number of seats. Please check the problem again.