Question

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 $35 per unit. To evaluate this offer, Troy Engines, Ltd., has gathered the following information relating to its own cost of producing the carburetor internally:

   

		Per Unit		15,000 Units Per Year
Direct materials	$	14	$	210,000
Direct labor		10		150,000
Variable manufacturing overhead		3		45,000
Fixed manufacturing overhead, traceable		6*		90,000
Fixed manufacturing overhead, allocated		9		135,000
Total cost	$	42	$	630,000

*One-third supervisory salaries; two-thirds depreciation of special equipment (no resale value).

1a.	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.

    

      

Total relevant cost (15,000 units)

Make:

Buy

2a.

Suppose that if the carburetors were purchased, Troy Engines, Ltd., could use the freed capacity to launch a new product. The segment margin of the new product would be $150,000 per year. Compute the total cost of making and buying the parts.

Total Relavent Cost (15,000 units)

Make:

Buy:

Answer 1

1
	Per unit		Total
	Make	Buy	Make	Buy
Direct materials	14		210000
Direct labor	10		150000
Variable manufacturing overhead	3		45000
Fixed manufacturing overhead traceable	2		30000
Purchase cost		35		525000
Total			435000	525000
	Make	Buy
Total relevant cost	435000	525000
1b
Reject
2a
	Make	Buy
Total cost	435000	525000
Opportunity cost	150000
Total relevant cost	585000	525000