$10.50
$10
$8.50
Answer:
The answer is $10. Don't worry I took the same lesson and it was correct :)
1 ticket = .50
12 tickets = $5.00 or .42/ticket
25 tickets = $10.00 or .40/ticket
50 tickets = $25.00 or .50/ticket
120 tickets = $50.00 or .42/ticket