Carlos is going to an amusement park for his 11th birthday with his 2 yr old brother and parents. His parents brought $100 to spend. Tickets for anyone under the age of 7 is free. Tickets for anyone 7 or older cost 15 dollars. After going on a few rides, Carlos and his family decide to eat lunch. They order 4 slices of pizza that cost $1.50 each. How much money does Carlos's family have to spend on dessert ?
