20.7 Furrilo Furriers has a contribution margin ratio of 80 percent and must sell 12,000 stoles at a unit price of $400 to break even. a. Compute total fixed costs. b. Compute variable cost per unit. c. Develop the company's cost formula. 21.1 A company regularly sells 100,000 washing machines at an average price of $250. The average cost of producing these machines is $180. Under what circumstances might the company accept a special order for 20.000 washing machines at $175 per machine