Contribution Margin Molly Company sells 40,000 units at $14 per unit. Variable costs are $11.20 per unit, and fixed costs are $59,400. Determine (a) the contribution margin ratio, (b) the unit contribution margin, and (c) operating income. a. Contribution margin ratio (Enter as a whole number.) _____% b. Unit contribution margin (Round to the nearest cent). _____per unit c. Operating income.