I need a clearer understanding of how to solve: Mrs. Lopez and her family are going to the movie theatre.  Adult tickets are $11.  Children’s tickets (ages 3-12) are $8.  Senior citizen’s tickets (ages 60+) are $9.  Mrs. Lopez needs to buy movie tickets for her husband, herself, her parents (ages 72 and 75), and her three children (ages 7, 10, 14).  How much money does she need to buy everyone’s tickets?