Additional data concerning these products are listed below. The grinding machines are potentially the constraint in the production faclity. A total of 65,000 minutes are avaliable per month on these machines. Direct labor is a variable cost in this company. Jp to how much should the company be willing to poy for one additional minute of grinding machine time if the company has nade the best use of the existing grinding machine capacity? let Round vour intermediate calculations to 2 decimal places