You and your friend are selling tickets to a charity event. You sell 9 adult tickets and 13 student tickets for $212. Your friend sells 4 adult tickets and 15 student tickets for $168. What is the cost of a student ticket?
$__

8$ a ticket

Step-by-step explanation:

X=adult tickets

Y=student tickets

(9x+13y=212)*4= 36x+52y=848

(4X+15y=168)*9= 36x+135y=1512

subtract both equations  -83y=-664

divide by -83   y=8

student tickets cost $8

ik how do do this just give me a few minutes and i will give it to