Answer:
Sold student tickets: 130, sold adult tickets: 110
Explanation:
Let s = number of student tickets sold,
Let a = number of adult tickets sold.
(It is given that there were 20 more student tickets sold than adult tickets)
(It is given that the total tickets sold is 240)
We can use substitution to find the number of student tickets:
∴110 adult tickets and 130 student tickets were sold.
I hope this helps :)