Bonita Dairy has four product lines: sour cream, ice cream, yogurt, and butter. The total costs of producing the milk base for the products is $53500 which has been allocated based on litres of milk base used by each product. Results of July follow:

	Sour Cream	Ice Cream	Yogurt	Butter	Total
Units sold	1680	720	530	4700	7630
Revenue	$7100	$14700	$12500	$25300	$59600
Variable departmental costs	3500	9800	6800	11900	32000
Fixed costs	4700	900	1500	6400	13500
Net income (loss)	($1100)	$4000	$4200	$7000	$14100

How much are total joint costs of the products?

$32000

$13500

$53500

$14100