max company manufactures and sells three products: good, better, and best. annual fixed costs are $3,315,000, and data about the three products follow. required: a. determine the weighted-average unit contribution margin. 195 b. determine the break-even volume in units for each product. c. determine the total number of units that must be sold to obtain a profit for the company of $234,000. d. assume that the sales mix for good, better, and best is changed to 50%, 30%, and 20%, respectively. will the number of units required to break-even increase or decrease? explain.