Answer:
Advance tickets-$15
Same-day tickets-$20
Step-by-step explanation:
let x be the cost of advance tickets and y cost of same-day tickets:
[tex]x+y=35\ \ \ \ \ \ \ ...i[/tex]
Given that there were 40 advance and 25 same-day tickets for a total of $1100:
[tex]40x+25y=1100\\\\8x+5y=220\ \ \ \ \ \ \ \ \ \ \ ...ii[/tex]
#Make x the subject in i and substitute in ii:
[tex]x=35-y\\\\\therefore 8x+5y=220, x=35-y\\\\8(35-y)+5y=220\\\\280-8y+5y=220\\\\60=3y\\\\y=20\\\\x=35-y=35-20=15[/tex]
Hence, advance tickets cost $15 each while same-day tickets cost $20 each.