a. Based upon the data in Exercise 20-11, determine the following:

1. Cost of beginning work in process inventory completed this period.

2. Cost of units transferred to finished goods during the period.

3. Cost of ending work in process inventory.

4. Cost per unit of beginning work in process completed during the period.

b. Did the production costs change from the preceding period? Explain.

c. Assuming that the direct materials cost per unit did not change from the preceding period, did the conversion costs per equivalent unit increase, decrease, or remain the same for the current period?