Sharp Aerospace has a five-year contract to supply North Plane with four specific spare parts for its fleet of airplanes. The following table provides information on selling prices, costs, and the number of units of each part that the company needs to produce annually according to the contract with North Plane:

Fixed overhead costs amount to $820,000 and are allocated based on the number of units produced. The company has a maximum annual capacity of 6,000 machine hours.
Instructions
Answer the following questions:
(a) If Sharp Aerospace could manufacture only one of the four parts, which spare part should it produce, based on the contribution margin per limited resource? Explain why.
(b) Polaris Airline wants to buy 200 units of part A10 at 110% of the price currently paid by North Plane. Assume that for any of the four parts, Sharp Aerospace has to supply North Plane with at least 90% of the number of units specified in the contract. Should Sharp Aerospace accept the order for 200 units of part A10?
(c) A new technology is available that costs $2.5 million and would increase Sharp Aerospace's annual capacity by 25%. Should the company purchase the new technology? Assume that the technology has an estimated life of four years and that Sharp Aerospace can sell, at the same prices paid by North Plane, all the units it can produce of any of the four parts. Show all your calculations.

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A10 A20 A30 A40 Sales Variable costs Contribution margin Production in units Machine hours/unit $1,500,000 $875,000 $450,000 $2,400,000 1,235,000425,000 187,000 ,875,000 525,000 600 265,000 1,000 $450,000 250 4 $263,000 750 1.5