Part A and B are correct.

Part C is incorrect. The area marked red is incorrect. I also put additional answers that were also incorrect below the incorrect answer.

please answer for C.

9.14 is also a wrong answer for C.

Glocker Company makes three products in a single facility. These products have the following unit product costs Product Direct materials 34.20 50.70 57.10 Direct labor 21.60 24.20 15.00 Variable manufacturing overhead 1.40 0.80 0.70 Fixed manufacturing overhead 11.30 6.90 7.50 Unit product cost $68.50 $82.60 $80.30 Additional data concerning these products are listed below. Mixing minutes per unit 1.40 1.00 0.20 Selling price per unit 72.00 94.40 87.90 Variable selling cost per unit 2.00 2.50 2.30 Monthly demand in units 2,200 4.200 2,200 The mixing machines are potentially the constraint in the production facility. A total of 7,620 minutes are available per month on these machines. Direct labor is a variable cost in this company. Required: a. How many minutes of mixing machine time would be required to satisfy demand for all three products? Answer is complete and correct 7,720 Total minutes required b. How much of each product should be produced to maximize net operating income? (Round your intermediate calculations to 2 decimal places and final answers to the nearest whole number.) Answer is complete and correct 2,129V Optimal production 4,200 2,200