Answer:
Ironically, the answer is in fact A
Step-by-step explanation:
This is basically a system of equations problem, where we take two equations to solve two variables
We'll set adult to x and student to y
10x+7y=125
9x+7y=116
Then we pick a method to find our solutions. It seems elimination seems the most convinent
10x+7y=125
-(9x+7y=116)
x = 9
Though we dont really need to continue since only one choice has an adult ticket that's $9, you could always plug in the value into an equation to find y
9(9)+7y=116
81+7y=116
7y=35
y=5
