for a recent year, McDonald's company -owned restaurents had the following sales and expenses(in millions):

sales $16,083

food and packging 5,350

payroll 4,185

occupacy ( rent, amortization) 4,006

general selling and adm. exp. 2,340

15,881

income from operations $ 202

assume that the variable costs consists of food and packing, payroll, and 40% of the general, selling and administartive expenses.

a. what is Mc D's contribution margin? round to the nearrest million.

b. what is McD's contribution margin ratio? round to one decimal place.

c. how much would income from operations increase if the same- store sales increased by $500 milion for the coming year, with no change in the contribution margin ratio or fixed costs?