Winkle, Kotter, and Zale is a small law firm that contains 10 partners and 12 support persons. The firm employs a job-order costing system to accumulate costs chargeable to each client, and it is organized into two departments-the Research and Documents Department and the Litigation Department. The firm uses predetermined overhead rates to charge the costs of these departments to its clients. At the beginning of the current year, the firm's management made the following estimates for the year Research and Documents Litigation 19.700 9.400 Direct attorney-hours Materials and supplies Direct attorney cost Departmental overhead cost 16,000 $ 17,800 5,100 429,100 800,900 $709,200 $320,360 The predetermined overhead rate in the Research and Documents Department is based on research-hours, and the rate in the Litigation Department is based on direct attorney cost The costs charged to each client are made up of three elements: materials and supplies used, direct attorney costs incurred, and an applied amount of overhead from each department in which work is performed on the case. Case 618-3 was initiated on February 10 and completed on June 30. During this period, the following costs and time were recorded on the case: Research and Documents Litigation Direct attorney-hours Materials and supplies Direct attorney cost S 49 $440 43 $ 30 $ 1,900 Required: 1-a. Compute the predetermined overhead rate used during the year in the Research and Documents Department Predetermined overhead rate per hour 1-b. Compute the predetermined overhead rate used during the year in the Litigation Department. % of direct attorney cost 2. Using the rates you computed in (1) above, compute the total overhead cost applied to Case 618-3. Total overhead cost 3. What would be the total cost charged to Case 618-3? Show computations by department and in total for the case. Research Litigation Materials and supplies Direct attomey cost Overhead cost applied Total cost