Your are faced with making a decision on a large capital investment proposal. The capital investment amount is $640,000. Estimated annual revenue at the end of each year in the eight year study period is $180,000. The estimated annual year-end expenses are $42,000 starting in year one. These expenses begin decreasing by $4,000 per year at the end of year four and continue decreasing through the end of year eight. Assuming a $20,000 market value at the end of year eight and a MARR = 12% per year, answer the following questions.
a. What is the IRR of this proposal?
b. What is the simple payback period for this proposal?