Problem 4-16 Comprehensive Problem-Weighted-Average Method [LO4-2, LO4-3, LO4-4, L04-5 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 tion datar Pounds in process , May 11 materials 100% complete; 81,000 460,000 conve rsion 90% complete Pounds started into produetion during May Pounds and out convo rsion 20% complete 55,000 Cost datar $158,200 s s0,500 Materials cost Conversion cost 5822,300 $277,520 Required 1. Compute the equivalent units of production for materials and conversion for May 2. Compute the cost per equivalent unit for materials and conversion for May 3. Compute the cost of ending work in process inventory for materials, conversion, and in total for May 4 Compute the cost of units transferred out to the next department for materials, conversion, and in total for May