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: Production data: Pounds in process, May 1; materials 100% complete ; 10,000 100,000 conversion 80% complete Pounds started into production during May Pounds completed and transferred out Pounds in process, May 31; materials 60% complete ; conversion 20% complete 15,000 Cost data: Work in process inventory, May 1: Materials cost Conversion cost $ 1,500 $ 7,200 Cost added during May: Materials cost Conversion cost $154,500 $ 90,800