Builder Products, Inc., uses the weighted average method in its process costing system. It manufactures a caulking compound that goes through three processing stages prior to completion. Information on work in the first department, Cooking, is given below for May: 80,000 450, cee Production data: Pounds in process, May 1; materials 100% complete; conversion 90% complete Pounds started into production during May Pounds completed and transferred out Pounds in process, May 31; materials 60% complete; conversion 40% complete Cost data: Work in process inventory, May 1: Materials cost Conversion cost Cost added during May: Materials cost Conversion cost 40, eee $116,900 $ 35,800 $607,840 $196,960