Problem No. 1: Make or Buy For most construction projects Bradley Heating and Cooling buys sheet metal and forms the metal into heating/cooling ducts as needed. The company estimates the costs of making and installing ductwork for the Kerry Park shopping mall to be as follows: Materials $35,000 Labour to form ductwork 4,000 Labor to install ductwork 10,000 Miscellaneous variable costs 1,500 Fixed costs allocated based on labor hours 3,000 Total Cost 53,500 The fixed costs related to the company's building, equipment, and office staff. The company plans to bill the Kerry Park developer $68,000 for services. Bradley is currently behind schedule on other projects and is paying a late penalty of $1,200 per day. Walt Bradley, the owner of Bradley Heating and Cooling, is considering ordering prefabricated ductwork for the Kerry Park job. The prefabricated ductwork will cost $42,000 (including cost of sheet metal). If Walt buys the prefabricated ductwork, he'll be able to reassign workers to another project and avoid five days of late fees. Should Bradley make the ductwork or buy it prefabricated