BluStar Company has two service departments, Administration and Accounting, and two operating departments, Domestic and International. Administration costs are allocated on the basis of employees, and Accounting costs are allocated on the basis of number of transactions. A summary of BluStar operations follows.

	Administration			Accounting			Domestic			International
Employees					25			15			60
Transactions		50,000						10,000			40,000
Department direct costs	$	57,000		$	24,000		$	153,750		$	601,000

BluStar estimates that the cost structure in its operations is as follows.

	Administration			Accounting			Domestic			International
Variable costs	$	28,000		$	6,600		$	114,500		$	435,000
Fixed costs		29,000			17,400			39,250			166,000
Total costs	$	57,000		$	24,000		$	153,750		$	601,000
Avoidable fixed costs	$	8,250		$	4,900		$	21,000		$	113,500

Required:

a. If BluStar outsources the Administration Department, what is the maximum it can pay an outside vendor without increasing total costs?

b. If BluStar outsources the Accounting Department, what is the maximum it can pay an outside vendor without increasing total costs?

c. If BluStar outsources both the Administration and the Accounting Departments, what is the maximum it can pay an outside vendor without increasing total costs?