ABC Co. is considering replacing an old power generator with a new one. The old one was purchased 5 years ago for $100,000. It is depreciated strait-line to zero over its 10-year life. It is expected to be worthless at the end of its 10-year life. If ABC sells it today, ABC should receive $65,000 for the generator. The new generator costs $150,000. It has a life of 5 years and will be depreciated strait-line to zero over its 5-year life. It is expected to be worthless at the end of its 5-year life. The new generator is expected to reduce the operating costs by $50,000 per year. There is no change in net working capital. The discount rate of this replacement project is 15%, and the tax rate is 40%.

. What is the incremental operating cash flow for this project?

a. $50,000

b. $30,000

c. $32,000

d. $38,000

e. $18,000

6. What is the incremental net capital spending for this project?

a. $59,000

b. $150,000

c. $91,000

d. $85,000

e. $65,000

Please show me the steps using financial calculator, not excel method.