I am struggling a lot with these few questions. If you can please help and show your work for learning purposes. thank you so much

Stoltenberg Co. had the following information for the month of June: Work in process beginning inventory, June 1 Units transferred in Work in process ending inventory, June 30 3,100 units 15,700 units 3,900 units Beginning work-in-process inventory is 30 percent complete as to conversion. Ending work-in-process inventory is 50 percent complete as to conversion. Materials are added at the end of the process. The equivalent units for materials under the weighted average method are calculated to be: Stoltenberg Co. had the following information for the month of June: Work in process beginning inventory, June 1 Units transferred in Work in process ending inventory, June 30 4,000 units 13,600 units 3,200 units Beginning work-in-process inventory is 30 percent complete as to conversion. Ending work-in-process inventory is 50 percent complete as to conversion. Materials are added at the end of the process. How many units were started and completed in June? Stoltenberg Co. had the following information for the month of June: Work in process beginning inventory, June 1 Units transferred in Work in process ending inventory, June 30 2,000 units 16,000 units 4,000 units Beginning work-in-process inventory is 30 percent complete as to conversion. Ending work-in-process inventory is 50 percent complete as to conversion. Materials are added at the end of the process. The equivalent units for conversion under the weighted average method are calculated to be