Cost of Units Completed and in Process The charges to Work in Process-Assembly Department for a period, together with information concerning production, are as follows. All direct materials are placed in process at the beginning of production. Work in Process-Assembly Department Bal., 4,000 units, 30% completed 10,080 To Finished Goods, 92,000 units Direct materials, 94,000 units @ $1.8 169,200 Direct labor 179,000 Factory overhead 69,560 Bal. ? units, 80% completed a. Based on the above data, determine the different costs listed below. If required, round your interim calculations to two decimal places. 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 the completed beginning work in process inventory, rounded to the nearest cent. b. Did the production costs change from the preceding period