If the budget is $100,000, which of the following projects should be done? What is the minimum attractive rate of return?

Please show answer in excel if possible.

Life Project (years) First Cost Annual Benefit Salvage Value 1 2 3 4 5 6 7 20 20 30 15 25 10 15 $20,000 20,000 20,000 20,000 20,000 20,000 20,000 $4000 $0 3200 20,000 3300 10,000 4500 0 4500 -20,000 5800 0 4000 10,000