15) Zeta Corp's most recent income statement is given below. Sales (8,000 units) $160,000 Less variable expenses (68.0001 Contribution margin 92,000 Less xed expenses (50.0001 Net income M Required: a. Contribution margin per unit is $ per unit b. If sales are doubled to $240,000, total variable costs will equal $ c. If sales are doubled to $240,000. total xed costs will equal $ (1. If 20 more units are sold, prots will increase by $ e. Compute how many units must be sold to break even. # f. Compute how many units must be sold to achieve prots of $60,000. #