B. Sarina is a cost controller in a manufacturing company that produces ceramic products. The production of the products will go through two processing departments that are the molding and finishing department. The company uses weighted average process costing method in determining the unit cost of its products. She is reviewing the monthly production report of the finishing department that was prepared by her newly hired assistant cost controller. She gets confused with the figures in the report. It is not only the format of the report, but Sarina also concerns on the RM25.71 cost per unit which she felt is higher than their normal unit cost. The production and cost information extracted from report are shown below: Finishing Department Costs: Work in process inventory, 1 October, 450 units; materials 100% complete; conversion 60% complete Costs transferred in during the month from the preceding department, 1,950 units Material costs added during the month Conversion cost incurred during the month Total cost for the department 31 October, Finishing department costs assigned to: Unit completed and transferred out; 1,800 units Work in process inventory; 600 units materials 0% complete; conversion 35% complete Total departmental cost assigned to all units Cost Incurred RM8,208 Consist of: (i) transferred in cost RM4,068 (ii) materials cost RM1,980 (iii) conversion cost RM2,160 RM17,940 RM6,210 RM13,920 RM46,278 RM25.71 per unit RM0 RM46,278 REQUIRED: (a) Calculate the equivalent unit for Finishing Department based on the data provided in the report. (3 Marks) (b) Calculate the cost per equivalent units for Finishing Department. (4 Marks) (c) Determine the cost of ending work in process inventory and cost of units completed and transferred out of the Finishing Department. (2 Marks) (d) Explain why the unit cost on the new assistant cost controller's report is higher than the unit cost determined in (a). (1 Mark)