Contribution Margin Willie Company sells 16,000 units at $12 per unit. Variable costs are $7.80 per unit, and fixed costs are $35,600. Determine (a) the contribution margin ratio, (b) the unit contribution margin, and (c) income from operations. a. Contribution margin ratio (Enter as a whole number.) % b. Unit contribution margin (Round to the nearest cent.) per unit c. Income from operations