Answer:
A. The cashflows for this project includes:
Year 0 initial outlay for equipment purchase -$33,000
Year 1-6 Net cash inflow of $8,560
Net cash inflow =
Part time help costs savings $5,700
Add contribution on incremental donuts sold$2,860
Total cash inflow =$8,560
B. The appropriate discount factor (internal rate of return) that provides a zero net present value = 14.3%
C. The IRR is 14%
D. With a salvage value of $10,855 the IRR becomes 19%
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