Goldstein Semiconductors experienced the following activity in its Photolithography ­Department during December. Materials are added at the beginning of the photo­lithography process.

Units:

Work in process, December 1 (80% of the way

through the process) ........................................................................ 9,000 units

Transferred in from the Polishing and Cutting Department during
December.......................................................................................... 23,000 units

Completed during December...............................................................? units

Work in process, December 31 (70% of the way through the
process)....................................................................................... 2,000 units

Costs:

Work in process, December 1 (transferred- in costs, $ 1,600;

direct materials costs, $ 20,450; and conversion costs, $ 37,890)...... $ 59,940

Transferred in from the Polishing and Cutting
Department during December.................................................................. 97,600

Direct materials added during December............................................... 53,150

Conversion costs added during December............................................. 90,850

Requirements

1. Summarize flow of physical units and compute total equivalent units for three cost categories: transferred- in, direct materials, and conversion costs.

2. Summarize total costs to account for and compute the cost per equivalent unit for each cost category.

3. Assign total costs to

(a) Units completed and transferred to Finished Goods Inventory and

(b) Units in December 31 Work in Process Inventory.