The expected costs for the Maintenance Department of Stazler, Inc., for the coming year include:
Fixed costs (salaries, tools): ...... $64,900 per year
Variable costs (supplies): ........$1.35 per maintenance hour
The Assembly and Packaging departments expect to use maintenance hours relatively evenly throughout the year. The Fabricating Department typically uses more maintenance hours in the month of November. Estimated usage in hours for the year and for the peak month is as follows:

Actual usage for the year by:
Assembly Department .......  3,960
Fabricating Department .......  6,800
Packaging Department ........10,000
Total maintenance hours ......20,760

Required:
1. Calculate a variable rate for the Maintenance Department. Calculate the allocated fixed cost for each using department based on its budgeted peak month usage in maintenance hours.
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?

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Yearly Hours Assembly Department Fabricating Department Packaging Department 4,500 6,700 10,800 22,000 Monthly Peak Hours 390 1,300 910 2.600 Total maintenance hours