TB Problem Qu. 4-129 (Algo) Holling Inc. uses the weighted-average ... *Holling Inc. uses the weighted-average method in its process costing. The following data concern the company's Mixing Department for the month of December. Materials Conversion Work in process, December 1 Cost added to production in the Mixing Department during December $ 7,830 $ 8,828 Equivalent units of production for December $ 226,200 9,600 $ 283,932 9,100 Required: Compute the cost per equivalent unit for materials and conversion for the Mixing Department in December. (Round your answers to 2 decimal places.) Materials Conversion Cost per equivalent unit