Roan paper co. produces paper used by the wallpaper manufacturers. Roan's four stage process includes mixing, rolling and cutting On march 1 the mixing dept had completed the mixing process for those 300 rolls and also startd and completed the mixing process for an additional 4,200 rolls of paper. the department started but did not finish the mixing process for an additional 500 rolls which 20% complete and respect to both direct materiels and conversion work at the end of March. how do I prepare production cost report for mixing department using the weighted average method