Alicia is fundraising for her soccer team by selling popcorn and cookies. She manages to sell 12 tins of popcorn and 21 tubs of cookies for a total of $320.55 on her first day of sales. The second day she ends up selling more. She sells 15 tins of popcorn and 32 tubs of cookies for a total of $447.55. What was the individual cost of each tin of popcorn and tub of cookies?