Exercise 6: Black Pearl, Inc., sells a single product. The company's most recent income statement is given below. Sales $50,000 Less variable expenses Contribution margin Less fixed expenses Net income (30,000) 20,000 (12,500) $7,500 Required: a. Contribution margin ratio is Breakeven point in total sales dollars iss b. c. To achieve $40,000 in net income, sales must total d. If sales increase by $50,000, net income will increase by