Weighted Average Process Costing Minot Processing Company manufactures one product on a continuous basis in two departments, Processing and Finishing. All materials are added at the beginning of work on the product in the Processing Department. During December 2009, the following events occurred in the Processing Department:

Units started	16,000 units
Units completed and transferred to Finishing Department	15,000 units

Costs assigned to processing: Raw materials (one unit of raw materials for each unit of product started)	$142,900
Manufacturing supplies used	18,000
Direct labor costs incurred	51,000
Supervisors' salaries	12,000
Other production labor costs	14,000
Depreciation on equipment	6,000
Other production costs	18,000

Additional information follows:

Minot uses weighted average costing and applies manufacturing overhead to Work-in-Process at the rate of 100 percent of direct labor cost.

Ending inventory in the Processing Department consists of 3,000 units that are one-third converted.

Beginning inventory contained 2,000 units, one-half converted, with a cost of $41,500 ($29,900 for materials and $11,600 for conversion).

(a) Prepare a cost of production report for the Processing Department for December.

(b) Prepare an analysis of all changes in Work-in-Process.