2. Banerjee Inc. uses the weighted-average method in its process costing system. The following data concern the operations of the company's first processing department for a recen month. Work in process, beginning: Units in process... Stage of completion with respect to materials.. Stage of completion with respect to conversion. Costs in the beginning inventory: Materials cost... Conversion cost.. 2,000 65% 30% $850 $1,120 Units started into production during the month... Units completed and transferred out.... 12,000 13,500 Costs added to production during the month: Materials cost.. Conversion cost. $41,620 $34,435 Work in process, ending: Units in process..... Stage of completion with respect to materials. Stage of completion with respect to conversion... ? ene 40% 35% Required: Using the weighted average method: a. Determine the equivalent units of production for materials and conversion cost. b. Determine the cost per equivalent unit for materials and conversion costs. Determine the cost of units transferred out of the department during the month. d. Determine the cost of ending work in process inventory in the department. c