Oates Company's Work in Process - Finishing account shows the following activity, Production records show that there were 2,000 units in beginning Work in Process inventory, 50% complete as to conversion costs; 8,000 units started into production, and 4,500 units completed and transferred out. The beginning Work in Process Inventory had conversion costs of $3,150. Conversion costs of $6,600 were added during the period. The units in ending inventory were 60%6 complete as to conversion costs. Materials are added at the beginning of the process. Instructions Answer the following questions. (a) How many units are in process at June 30 ? (b) What is the unit conversion cost for June? (c) What is the conversion cost in the June 30 work in process inventory