Support Department Cost Allocation-Reciprocal Services Method information is provided in the following table: Using the reciprocal services method of support department cost allocation, determine: a. The percentage of Janitorial costs that should be allocated to the Security Department. % b. The percentage of Security costs that should be allocated to the Janitorial Department. High-Low Method The manufacturing costs of Rosenthal Industries for the first three months of the year follow: Contribution Margin Molly Company sells 38,000 units at $26 per unit. Variable costs are $15.08 per unit, and fixed costs are $240,700. 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.) per unit c. Operating income