what's the anwser for part A?

Galvanized Products is considering purchasing a new computer system for their enterprise data management system. The vendor has quoted a purchase price of $90,000. Galyanized Products is planning to borrow 1/4 th of the purchase price from a bank at 12.00% 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 $5,800 at that time. Over the 5 -year period, Galvanized Products expects to pay a technician $24,000 per year to maintain the system but will save $51,000 per year through increased efficiencies. Galvanized Products uses a MARR of 15,00% /year to evaluate investments. a. What is the present worthof this investment? Do ell calculotions to 5 decimal ploces ond round finol answer to 2 decimal ploces. Tolerance is \pm 1.00 . b. What is the decision rule foriudging the attractiveness of imvestments based on present worth? c. Should the new computer sytem be purchased