LO5-4) en uses the weighted average method in its process costing sy tin production departments. All of the material that is used in cessing in that department. Data for May for the first productic Units 5,000 10,000 s inventory, May 1 5 inventory, May 31 in work in process inventory, May 1 in work in process inventory, May 1 _nto production ed to the next production department added during May added during May LO5-4) en uses the weighted average method in its process costing sy tin production departments. All of the material that is used in cessing in that department. Data for May for the first productic Units 5,000 10,000 s inventory, May 1 5 inventory, May 31 in work in process inventory, May 1 in work in process inventory, May 1 _nto production ed to the next production department added during May added during May