$6-37$ Weighted$-$Average Method Weatherly Lumber Company processes wood pulp for manufacturing various paper products. The company employs a process costing system for its manufacturing operations. All direct materials are added at the beginning of the process, and conversion costs are incurred uniformly throughout the process. This is the company's production schedule for May:Tons of PulpPercent CompletedMaterialsConversionWork$-$in$-$process inventory, May $15,000100\%50\%$Started during May$15,000$Units to account for$20,000$Units from beginning work$-$in$-$process,which were completed and$5000$transferred out during May$12,000$Started and completed during May$3,000100\%50\%$Work$-$in$-$process inventory, May $3120,000$