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Associates Inc. uses the weighted-average method in its process costing system. The following data relates to the process operations of the company for a recent month. Work in process, beginning: Units in process Percent complete with respect to direct materials Percent complete with respect to conversion costs 500 80% 70% Units started into production during the month Units completed and transferred to finished goods 12,000 12,000 Work in process, ending: Units in process Percent complete with respect to direct materials Percent complete with respect to conversion costs 500 80% 20% Costs in the beginning work in process inventory: Direct materials cost Conversion costs $1,340 $8,475 Costs added to production during the month: Direct materials cost Conversion costs $65,000 $412,000 Total costs $486,815 Required: a. Determine equivalent units of production for direct materials and conversion costs. b. Determine costs per equivalent unit for direct materials and conversion costs. C. Determine the cost of the units completed and transferred to finished goods. d. Determine the cost of the incomplete units in ending work in process inventory