Contribution Margin and Contribution Margin Ratio For a recent year, McDonald's Company-owned restaurants had the following sales and expenses (in millions): Sales Food and packaging Payroll Occupancy (rent, depreciation, etc.) $24,100 $6,478 6,100 7,302 General, selling, and administrative expenses 3,500 $23,380 $720 Income from operations Assume that the variable costs consist of food and packaging, payroll, and 40% of the general, selling, and administrative expenses. a. What is McDonald's contribution margin? Round to the nearest million. (Give answer in millions of dollars.) x million b. What is McDonald's contribution margin ratio? %