Manusson Common Core 13 Colonies Lesso... Mapping My Worl S Creating Class Pri... education.com les... Other Bool eBook Show Me How Contribution Margin Harry Company sells 28,000 units at $20 per unit. Variable costs are $13.80 per unit, and fixed costs are $76,400 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.) c. Operating income per unit