What is 67.24 as a mixed number in simplest form

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Can someone me with the property questions for 12 13 and 14 plz

A50% increase followed by 33 1/2% decrease