TB MC Qu. 13-112 Fast Food, Inc., has purchased... Fast Food, Inc, has purchased a new donut maker It cost $16,000 and has an estimated life of 10 yeats. The following annual donut sales and expenses are projected (Ignore income taxes) $22,800 Sales Expenses: $10,000 Flour, etc., required in making donuts Salaries Depreciation 6,000 1,600 17,606 4,400 Net operating income Assume cash flows occur uniformly throughout a year except for the initial investment The payback period on the new machine is closest to