10. A company must select between equipment A and B. Estimate the present worth of the alternatives at 9% annually and rcom mend the best option. Cost Initial cost Annual revenue Annual O&M costs Overhaul (year 6) Salvage value Life (years) $45,000 $12,000 $ 3,900 $10,000 $ 4,500 10 S35,000 $13,000 $ 4,200 Not required $ 3,500