Contribution Margin Willie Company sells 21,000 units at $29 per unit. Variable costs are $22.33 per unit, and fixed costs are $53,200. 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