The expected costs for the Maintenance Department of Stazler, Inc., for the coming year include: Fixed costs (salaries, tools): $77,280 per year Variable costs (supplies): $1.45 per maintenance hour Estimated usage by: Assembly Department 5,000 Fabricating Department 6,000 Packaging Department 11,400 Total maintenance hours 22,400 Actual usage by: Assembly Department 3,650 Fabricating Department 6,100 Packaging Department 10,600 Total maintenance hours 20,350Required: 1. Calculate a single charging rate for the Maintenance Department. Round your answen the nearest cent. $ 4.3 per maintenance hour 2. Use the two rates to assign the costs of the Maintenance Department to the user departments based on actual usage, Calculate the total amount charged for maintenance for the year. $ 92,690 Required: 1. Calculate a single charging rate for the Maintenance Department. Round your answer to the nearest cent $ 4.3 per maintenance hour 2. Use the two rates to assign the costs of the Maintenance Department the user departments based on actual usage. Calculate the total amount charged for maintenance for the year. $ 92,690 3. What if the Assembly Department used 4,000 maintenance hours the year? How much would have been charged out to the three departments? Assembly Department charge 16,000 Fabricating Department charge 27,200 Packaging Department charge 13,500 Total amount charged 83,200