Calculating and using a Single Charging Rate The expected costs for the Maintenance Department of Stozler, Inc., for the coming year indude: Fixed costs (salaries, tools): $75,375 per year Variable costs (supplies): $1.45 per maintenance hour Estimated usage by: Assembly Department 4,500 Fabricating Department 6,800 Packaging Department 11,200 Total maintenance hours 22,500 Actual usage by: Assembly Department 3,350 Fabricating Department 6,900 Packaging Department 10,400 Total maintenance hours 20,650 Required: 1. Calculate a single charging rate for the Maintenance Department, Round your answer to the nearest cent. per maintenance hour 2. Use this rate to asign the costs of the Maintenance Department to the user departments based on actual usage Calculate the total amount charged for maintenance for the year 3. What if the Anembly Department used 4,000 maintenance hours in the year? How much would have been charged out to the three departments? When required, round your answers to the nearest dollar. Assembly Department charge Fabricating Department charpe Packaging Department charge DITO Total amount charged