Bruce Corporation mokes four products in a single facility. These products have the following unit product costs: Additional dota concerning these products are listed below The grinding machines are potenbally the constraint in the production facility. A total of 97100 minutes are available per month on these machines. Direct labor is a variable cost in this company. Up to how much should the company be willing to pay for one additional minute of giliding machine time if the coqpary has made the best use of the existing grinding machine capacity? (Round your intermediate calculations to 2 decimal places.)