Brewer Company is considering purchasing a machine that would cost $369, 450 and have a useful life of 6 years. The machine would reduce cash operating costs by $82, 100 per year. The machine would have a salvage value of $107, 110 at the end of the project. (Ignore income taxes.) a. Compute the payback period for the machine. Payback period years b. Compute the simple rate of return for the machine. Simple rate of return %