Dewey Company uses the weighted-average method in its process-costing system. The first processing department, the Welding Department, started the month with 15,000 units in its beginning work-in-process inventory that were 20% complete with respect to conversion costs. The conversion cost in this beginning work-in-process inventory was $19,200. An additional 86,000 units were started into production during the month. There were 13,000 units in the ending work-in-process inventory of the Welding Department that were 60% complete with respect to conversion costs. A total of $575,360 in conversion costs were incurred in the department during the month.The cost per equivalent unit for conversion costs is closest?