Grow Fertilizers Company purchases a gravity settling tank of the $50,000 purchase price. The company finance 50% of the investment with a loan to be repaid with eight equal semi annual principal payments plus interest of the balance at an annual interest rate of 12% compounded semi annually. It is anticipated that the tank will be used for 9 years and then be sold for $5000 at that time. Annual operating and maintenance expenses are estimated to be $60,000/year increasing 10% per year thereafter. A savings of $85,000/year in year 1 increasing by $2,000 per year thereafter are realized over the present filtration system. The firm uses a MARR (TVOM) of 15% for its economic analysis. Determine the following:

a. Present worth.

b. Equivalent annual worth.

c. Internal rate of return.

d. Draw conclusions about the economic feasibility of the investment