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. what is the cost per equivalent unit for conversion costs ?