Exercise 12-3 Make or Buy a Component LO12-31 Troy Engines, Ltd., manufactures a variety of engines for use in heavy equipment. The company has always produced all of the necessary parts for its engines, including all of the carburetors. An outside supplier has offered to sell one type of carburetor to Troy Engines, Ltd., for a cost of $23 per unit. To evaluate this offer, Troy Engines, Ltd., has gathered the following information relating to its own cost of producing the carburetor internally 15,700 Per Units Unit Per Year 5 78,500 Direct materials 7 109.900 Direct labor 47,100 Variable manufacturing overhead 9* 141.300 Fixed manufacturing overhead, traceable 9 141.300 Fixed manufacturing overhead, allocated 33 $518,100 Total cost *40% supervisory salaries; 60% depreciation of special equipment (no resale value) Required: la. Assuming that the company has no alternative use for the facilities that are now being used to produce the carburetors, compute the total cost of making and buying the parts. (Round your Fixed manufacturing overhead per unit rate to 2 decimals.) Make Buy Total relevant cost (15,700 units)