Contribution margin and contribution margin ratio For a recent year, McDonald's (MCD) company-owned restaurants had the following sales and expenses (in millions): Assume that the variable costs consist of food and paper, payroll, 25% of occupancy and other expenses, and 40% of the general, selling, and administrative expenses. a. What is McDonald's contribution margin? $ million b. What is McDonald's contribution margin ratio? Round to one decimal place. % million