TB Problem Qu. 4-129 (Algo) Holling Incorporated uses the weighted-average ... Holling Incorporated uses the weighted-average method in its process costing. The following data concern the company's Mixing Department for the month of December. Work in process, December 1 Cost added to production in the Mixing Department during December Equivalent units of production for December Materials $ 7,730 $ 226,100 9,500 Conversion $ 8,728 $ 283,832 9,000 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