Sigma Corporation is a biotech company based in Michigan. It makes a cancer-treatment drug in a single processing department. Direct materials are added at the start of the process. Conversion costs are added evenly during the process. Sigma uses the FIFO method of process costing. The following information for August 2014 is available. Equivalent Units Physical Direct Conversion Units Materials Costs Work in process, August 1 8,500 8,500 1,700 Started during August 35,000 Completed and transferred d out during August 33,000 33,000 33,000 Work in process, August 31 10,500 10,500 6,300 Degree of completion: direct materials, 100%; conversion costs, 20%. Degree of completion: direct materials, 100%; conversion costs, 60%. Total costs for August 2014 Work in process, beginning Direct materials $63,100 Conversion costs 45,510 $108,610 Direct materials added during August 284,900 Conversion costs added during August 485,040 Total costs to account for $878,550 (Show all your work from Steps 1 to 5 of Process Costing using the FIFO method.) a. Calculate the cost per equivalent unit for direct materials and conversion costs. b. Summarize total costs to account for and assign total costs to units completed (and transferred out) and to units in ending work in process