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 15% 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 $4,000 at that time. Over the 5-year period, Galvanized Products expects to pay a technician $27,000 per year to maintain the system but will save $57,000 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 = % Do all calculations to 5 decimal places and round your final answer to 2 decimal places. Tolerance is +/- 2