Answer:
The answer is 25 student tickets
Explanation:
If:
Adult ticket price = 7
Student ticket price = 7-2 = 5
Adult ticket quantity = x
Student ticket quantity = y
Ticket quantity sold = x + y =45
Saturday sells = 265
Then:
![\left \{ {{x+y=45} \atop {7x+5y=265}} \right.](https://img.qammunity.org/2020/formulas/mathematics/high-school/copk90k9jsokaali9vduvg8w7h54fs032m.png)
So:
x= 45 - y
265 = 7(45 - y) + 5y
265 = 315 - 7y + 5y
265 = 315 -2y
265 - 315 = -2y
-50 = -2y
y= 50/2
y=25