The machining department of Sheffield Manufacturing had a busy year! Management evaluated the stage of completion of ending WIP Inventory and recorded the following in Step 1 of its process costing analysis. Sheffield adds its conversion costs evenly throughout the machining process. (a) Determine the equivalent units of production for both DM and conversion costs this year for the Sheffield machining department under the FIFO method. According to the completion percentages in part (a), does Sheffield add DM costs in the machining department closer to the beginning, the middle, or the end of the process? eTextbook and Media Attempts: 0 of 2 used (d) Determine the equivalent units of production for both DM and conversion costs this year for the Sheffield machining department under the weighted-average method