HAPTER 12 U Bruce Corporation makes four products in a single facility. These products have the following unit product costs: Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Unit product cost Products B C D $13.00 $ 8.90 $ 9.70 $ 9.30 18.10 26.10 32.30 39.10 3.00 1.40 1.30 1.90 25.20 33.50 25.30 35.90 $59.30 $69.90 $68.60 $ 86.20 Additional data concerning these products are listed below. Products Grinding minutes per unit Selling price per unit Variable selling cost per unit Monthly demand in units 2.50 3.00 3.00 2.10 $74.80 $92.20 $86.10 $102.90 $ 0.90 $-0.10 $ 2.00 $ 0.30 2,700 2,700 1,700 1,900 The grinding machines are potentially the constraint in the production facility. A total of 52,400 minutes are available per month on these machines. Direct laboris a variable cost in this company How many minutes of grinding machine time would be required to satisfy demand for all four products