05.01-PR015 WP Final Finishing is considering three mutually exclusive alternatives for a new polisher. Each alternative has an expected life of 10 years and no salvage value. Polisher 1 requires

an initial investment of $20,000 and provides annual benefits of $4,465. Polisher 2 requires an initial investment of $10,000 and provides annual benefits of $1,770. Polisher 3 requires an initial investment of $15,000 and provides annual benefits of $3,580. MARR is 15%/year. a. What is the annual worth of each polisher? b. Which polisher should be recommended?