Problem 12-20 Prepare a contribution margin format income statement; answer what-if questions LO 7, 8, 9,12 Shown here is an income statement in the traditional format for a firm with a sales volume of 17,000 units: $204,000 $145,550 15,750 $118,850 Revenues Cost of goods sold (S10,000 $2.85/unit) Gross profit Operating expenses: Selling ($2,150+$0.80/unit) Administration ($5,000 $0.35/unit) Operating income Required a. Prepare an income statement in the contribution margin format. Contribution Margin Income Statement Revenues Variable expenses: Cost of goods sold Selling expenses Administrative expenses 204,000 $ 48.4500 13,600 5,950 Total variable expenses Contribution margin Fixed expenses: Cost of goods sold Selling expenses Administrative expenses 68,000 136,000 $ 10,000 2,150 5,000 Total fixed expenses Operating income 17,150 $118,850 b. Calculate the contribution margin per unit and the contribution margin ratio. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Contribution margin per unit Contribution margin ratio 8.00 66.67 % c-1. Calculate the firm's operating income (or loss) if the volume changed from 17,000 units to 22,000 units. (Do not round intermediate calculations.) Operating income 158,850 c-2. Calculate the firm's operating income (or loss) if the volume changed from 17,000 units to 9,000 units. (Do not round intermediate calculations.) Operating income$ 18,850 Refer to your answer to part a when total revenues were $204,000. d-1. Calculate the firm's operating income (or loss) if unit selling price and variable expense per unit do not change and total revenues increase by $12,500. (Do not round intermediate calculations.) Operating income 55,017 d-2. Calculate the firm's operating income (or loss) if unit selling price and variable expense per unit do not change and total revenues decrease by $8,000. (Do not round intermediate calculations.) Operating income 48,18369