Shaw's Pizza sells an average of 250 pizzas per week, of which 20% are single-topping pizzas and 80% are supreme pizzas with multiple toppings. Singles sell for $11 each and incur variable costs of $8. Supremes sell for $21 each and incur variable costs of $6. The contribution margin per unit and total contribution margin for Singles and Supremes are Singles Contribution Total Margin per Unit Contribution Margin Supremes Contribution Total Margin per Unit Contribution Margin . $ 3 $ 550 $ 15 $ 1,500 OB $ 3 150 3,000 OC. 15 15 $ 3 3,000 $ 150 OD $ 3 150 15 $ 150