This is a problem from my Engineering Economics class.

Initial cost Annual benefit Salva e value Life in ears MARR Problem 5-10 $15,000 $8,000 $5,000 2 ears $9,000 $2,000 $9,000 3 Years c $12,000 $1,800 0 Infini The Net Present Worth of alt. A IS The Net Present Worth of alt. B IS The Net Present Worth of alt. C IS