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Gilley, Inc. sells a single product. Gilley's most recent income statement is given below: Sales (sold 4,000 units) $120,000 - Variable costs: Variable manufacturing costs (48,000) Variable selling and general costs (20,000) Contribution margin 52,000 - Fixed costs: Fixed manufacturing costs (30,000) Fixed selling and general costs (10,000) Operating income $ 12.000 REQUIRED: (2 points each unless otherwise indicated) a. Contribution margin (CM) per unit is: per unit b. If sales are doubled to $240,000, total variable costs will equal: $ (1 point) c. If sales are doubled to $240,000, total fixed costs will equal: $ (1 point) d. If 10 more units are sold, profits will increase by: e. How many units must be sold to break-even? units f. How many units must be sold to achieve net income (after tax) of $15,000? Assume income tax rate of 40%. units g. Compute the new break-even point in units if fixed manufacturing costs are increased by $10,000, and a target operating income is $18,000. (extra 1 point) units $