Helix Corporation produces prefabricated flooring in a series of steps carried out in production departments. All of the material that is used in the first production department is added at the beginning of processing in that department. Data for May for the first production department follow: Required: Assume that the company uses the weighted-average method of accounting for units and costs. Determine the equivalent units for May for the first process. Compute the costs per equivalent unit for May for the first process. Determine the total cost of ending work in process inventory and the total cost of units transferred the next process in May