A computer call center is going to replace all of its incandescent lamps with more energy efficient fluorescent lighting fixtures. The total energy savings are estimated to be $2,462 per year, and the cost of purchasing and installing the fluorescent fixtures is 54,900. The study period is three years, and terminal market values for the fixtures are negligible a. What is the IRR of this investment? b. What is the simple payback period of the investment? .. Is there a conflict in the answers to Parts (a) and (b)? List your assumptions. d. The simple payback rate of return" is 110 a. The IRR of the investment is (Round to one decimal place) A group of private investors borrowed $28 million to build 290 new luxury apartments near a large university. The money was borrowed at 6% annual interest, and the loan is to be repaid in equal annual amounts (principal and interest) over a 45-year period. Annual operating, maintenance, and insurance expenses are estimated to be $4,000 per apartment, and these expenses are incurred independently of the occupancy rate for the apartments. The rental fee for each apartment will be $13,000 per year, and the worst-case occupancy rate is projected to be 75%. a. How much profit (or loss) will the investors make each year with 75% occupancy? b. Repeat Part (a) when the occupancy rate is 90% Click the icon to view the interest and annuity table for discrete compounding when the MARR is 6% per year, a. The profit (or loss) that the investors will make each year with 75% occupancy is million dollars per year. (Round to three decimal places)