Seth orders 5 supreme pizzas for his video game party. His total bill, including a $3.00 delivery charge and a $7.00 tip, is $64.75. What is the cost of a supreme pizza?

First you add the tip and delivery fee and get $10. then you take the total amount of $64.75 and subtract 10 from it to get $54.75. Thats the total amount he spent on pizza by itself. then to find the amount of each pizza you divide 54.75 by 5 and get $10.95 as your answer.

Cost of 5 supreme pizzas = 64.75 - (3+7) = $54.75

Cost of 1 supreme pizza = $54.75/5 = $10.95