Trying to Review this problem I did a while ago, please show exactly how the cost was calculated. I believe for 1.) 4,000 *0.5 * $3.10 = 6200 6200 + 12600= 18800 Where did $3.10 come from?

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 dir materials are placed in process at the beginning of production. 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? 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