Show Attempt History Current Attempt in Progress Your answer is partially correct. Galvanized Products is considering purchasing a new computer system for their enterprise data management system. The vendor has quoted a purchase price of $100,000. Galvanized Products is planning to borrow one-fourth of the purchase price from a bank at 16% compounded annually. The loan is to be repaid using equal annual payments over a 3-year period. The computer system is expected to last 5 years and has a salvage value of $3,000 at that time. Over the 5-year period, Galvanized Products expects to pay a technician $20,000 per year to maintain the system but will save $50,000 per year through increased efficiencies. Galvanized Products uses a MARR of 14%/year to evaluate investments. a. What is the external rate of return of this investment? ERR = 6.9 % Do all calculations to 5 decimal places and round your final answer to 2 decimal places. Tolerance is +/-2 b. What is the decision rule for judging the attractiveness of investments based on external rate of return? IF ERR 2 MARR, ACCEPT; OTHERWISE, REJECT. c. Should the new computer system be purchased? Yes