The Nitrogen Fixation Department of Sarasota Company began the month of December with work in process inventory of 4,320 units that are 100% complete as to materials and 30% complete as to conversion costs. Units completed and transferred out are 12,960 units. Ending work in process inventory contains 10,800 units that are 100% complete as to materials and 40% complete as to conversion costs. Compute the equivalent units of production for March for materials and conversion costs for the month of December using the weighted average method of process costing. Equivalent Units of Production Quantities Physical Units Materials Conversion Costs Units to be accounted for Work in process inventory,12/1 4,320 Started into production Total units to be accounted for Units accounted for Completed and transferred out 12.960 Work in process inventory, 12/31 10,800 Total units accounted for