Lubricants, Incorporated, produces a special kind of grease that is widely used by race car drivers. The grease is produced in two processing departments-Refining and Blending. Raw materials are introduced at various points in the Refining Department. The following incomplete Work in Process account is available for the Refining Department for March: Work in Process-Refining Department Debit Credit March 1 balance 38,000 Completed and transferred to Blending ? Materials Direct labor Overhead 495,000 72,000 181,000 March 31 balance ? The March 1 work in process inventory in the Refining Department consists of the following elements: materials, $25,000; direct labor, $4,000; and overhead, $9,000. Costs incurred during March in the Blending Department were: materials used, $115,000; direct labor, $18,000; and overhead cost applied to production, $42,000.