. Domore's Engineering is considering whether to lease or buy an earth moving equipment. The MARR is 8% and the costs of buying an earth mover are as follows. If the equipment is leasing, in addition to incurring an operating cost of $300 per day, the company has to pay a rental fee of $100 per day. Determine the minimum number of days per year that the company has to use the earth mover in order to justify buying the equipment. Purchase Price $150,000 Life Salvage value Maintenance Insurance Operating cost day $300/day 10 years $15,000 - $1,800/year -$1,200 /year Y 245 days