A Zeta Corp's most recent income statement is given below Sales (8,000 units) Less variable expenses Contribution margin Less fixed expenses Net income $160,000 68,000) 92,000 (50,000) $ 42,000 Required Sper unit a. Contribution margin per unit is b. If sales are doubled to $240,000 total variable costs will equal c. If sales are doubled to $240,000 total fixed costs will equal d. If 20 more units are sold, profits will increase by Compute how many units must be sold to break even e. f. Compute how many units must be sold to achieve profits of $60,000 B Furniture, Inc, sells lamps for $30. The unit variable cost per lamp is $22. Fixed costs total $9,600 Required: a. What is the contribution margin per lamp? b. What is the breakeven point in lamps? How many lamps must be sold to earn a pretax income of $8,000? What is the margin of safety, assuming 1,500 lamps are sold? c. d