The initial cost of a packed-bed degassing reactor for removing trihalomethanes from potable water is $84,000. The annual operating cost for power, site maintenance, etc. is $13,000. If the salvage value of the pumps, blowers, and control systems is expected to be $9000 at the end of 10 years, the AW of the packed-bed reactor, at an interest rate of 8% per year, is closest to: (a) $−26,140 (b) $−25,518 (c) $−24,900 (d) $−13,140

The operating cost for a machine is $40,000 for year 1 and then it increases by $5,000per year through year 10. The equivalent uniform annual cost for the machine (years 1-10) at an interest rate of 9% per year is calculated as:

Biomet Implants is planning new online patient diagnostics for surgeons while they operate. The new system will cost $300,000 to install in an operating room, $5000 annually for maintenance, and have an expected life of 4 years. The revenue per system is estimated to be $80,000 in year 1 and to increase by $10,000 per year through year 4. Determine if the project is economically justified using PW analysis and an MARR of 10% per year. $-18,470 not justified $-18,475 not justified $-18,477 not justified $-18,479 not justified O No correct answer

A professional mechanics who specializes in truck engines paid $46,000 for equipment that will have a $4800 salvage value after 5 years. The costs with each usage amount to $60 per day. The income is $290 per day for his services, how many days per year must he be worked in order to break even at an interest rate of 7% per year?