Equivalent Units of Materials Cost

The Rolling Department of Jabari Steel Company had $4,300$ tons in beginning work in process inventory $(10\%$ complete$)$ on October $1.$ During October, $71,100$ tons were completed. The ending work in process inventory on October $31$ was $3,600$ tons $(20\%$ complete$).$What are the total equivalent units for direct materials for October if materials are added at the beginning of the process?