Ethan had 7 of his friends over, he ordered cheese pizzas and mozzarella sticks for the 8 of them. In all they’re were 64 pieces of food if each person had 5 slices of pizza find the number of mozzarella sticks each person ate
If Ethan ordered 7 cheese pizzas, and each person had 5 slices of pizza, each person ate 7 * 5 = <<7*5=35>>35 pieces of pizza.
Since there were a total of 64 pieces of food, each person had 64 - 35 = <<64-35=29>>29 mozzarella sticks. Answer: \boxed{29}.