Contribution margin and contibution margin ratio For a recent year, McDonald's (MCD) company-owned restaurants had the following asies and expenses (in millions): Assume that the variable costs consist of food and peper, payroll, 25% of occupancy and othec expenses, and 40% of the general, seling, and administrative expenses. a. What is MeDonald's contribution margin? x milion b. What is McDonald's contribution margin ratio? Round to one decimal place. c. How much would operating income increase if same-store sales increased by s1,000 million for the coming yaar; with no change in the contribution margin ratio or fixed costs? Round your answer to the nearest tenth of a million (one decimal place). militen