Bumps Unlimited, a highway contractor, must decide whether to overhaul a tractor and scraper or replace it. The old equipment was purchased 5 years ago for $130,000; it had a 12-year projected life. If traded for a new tractor and scraper, it can be sold for $60,000. Overhauling the equipment will cost $20,000. If overhauled, O&M cost will be $25,000/year and salvage value will be negligible in 7 years.

If replaced, a new tractor and scraper can be purchased for $150,000. O&M costs will be $12,000/year. Salvage value after 7 years will be $35,000. Using a 15% MARR, should the equipment be replaced?