Contribution Margin Harry Company sells 18,000 units at $47 per unit. Variable costs are $30.55 per unit, and fixed costs are $127,300 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.) X per unit c. Operating income $$XperunitX