Required: 1. Calculate a single charging rate for the Maintenance Department. Round your answer to the nearest cent. 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. 3. What if the Assembly Department used 4,000 maintenance hours in the year? How much would have been charged out to the three departments? Assembly Department charge Fabricating Department charge Packaging Department charge Total amount charged