Williams Co. manufactures a single product that goes through two processes - mixing and cooking. The following data pertains to the Mixing Department for September. Material R is added at the beginning of work in the Mixing Department. Material S is also added in the Mixing Department, but not until units of product are thirty percent completed with regard to conversion. Conversion costs are incurred uniformly during the process. Required: Calculate the equivalent units for Material R using the weighted average method. Calculate the equivalent units for Material S using the weighted-average method. Calculate the equivalent units for conversion using the weighted-average method. Calculate the unit costs using the weighted-average method. Calculate the cost of units completed and transferred out using the weighted average method. Calculate the cost of ending work in process using the weighted average method