An electronics manufacturer is considering two methods for producing a circuit board. The board can be hand-wired at an estimated cost of $9.80 per unit and an annal fixed equipment cost of $10,000. A printed equivalent can be produced using equipment costing $180,000 with a service life of 8 years and salvage value of $12,000. It is estimated that the labor cost will be $3.20 per unit and the processing equipment will cost $4,000 per year to maintain. If the interest rate is 8%, how many circuit boards must be produced each year for the two methods to break even? 7. An arc welding machine that is used for a certain joining process costs $90,000. The machine has a life of 5 years and a salvage value of $10,000. Maintenance, taxes, insurance, and other fixed costs amount to $5,000 per year. The cost of power and supplies is $28.00 per hour of operation and the total operator cost (direct and indirect) is $65.00 per hour. If the cycle time per unit of product is 60 minutes and the interest rate is 8%, calculate the cost per unit if (a) 200 , (b) 600 , and (c) 1,800 units of output are needed per year