Broze Company makes four products in a single facility. These products have the following unit product costs:

	Products
	A	B	C	D
Direct materials	$15.00	$10.90	$11.70	$11.30
Direct labor	20.10	28.10	34.30	41.10
Variable manufacturing overhead	5.00	3.40	3.30	3.90
Fixed manufacturing overhead	27.20	35.50	27.30	37.90
Unit product cost	$67.30	$77.90	$76.60	$94.20

Additional data concerning these products are listed below.

	Products
	A	B	C	D
Grinding minutes per unit	4.50	6.00	5.00	4.10
Selling price per unit	$76.80	$94.20	$88.10	$104.90
Variable selling cost per unit	$2.90	$1.90	$4.00	$2.30
Monthly demand in units	4,700	4,700	3,700	2,700

The grinding machines are potentially the constraint in the production facility. A total of 54,300 minutes are available per month on these machines.

Direct labor is a variable cost in this company.

How many minutes of grinding machine time would be required to satisfy demand for all four products?

54,30018,60057,77078,920