Answer:
#adult tickets sold = 346
#student tickets sold = 812
Explanation:
let 'x' = # adult tickets sold
let 'y' = # students tickets sold
System of Equations:
x + y = 1158
5x + y = 2542
I used the elimination method and multiplied the first equation by -1
-x - y = -1158
+ 5x + y = 2542
4x = 1384
x = 346
346 + y = 1158
y = 812