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Contribution Margin United Merchants Company sells 24,000 units at $22 per unit. Variable costs are $15.18 per unit, and fixed costs are $83,500. 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