In a process with 900 units of beginning Work in Process inventory, the company completed and transferred out 9700 units during a period. There were 4800 units in the ending Work in Process inventory that were 45% complete as to conversion costs. Direct materials are added 80% at the beginning of the process and 20% when the units are 90% complete. How much is equivalent units of production for the period for material costs if the weighted-average method is used? 13540 equivalent units of production 10670 equivalent units of production 11640 equivalent units of production 14500 equivalent units of production