Sell Block prepares three types of simple tax returns: individual, partnerships, and (small) corporations. The tax returns have the following characteristics. The total fixed costs per year for the company are $496,400. Required: a. What is the anticipated level of profits for the expected sales volumes? b. Assuming that the product mix is the same at the break-even point, compute the break-even point. c. Suppose the product sales mix changes so that for every ten tax returns prepared, six are for individuals, one is for a partnership, and three are for corporations. Now what is the break-even volume for Sell Block