In a process with 720 units of beginning Work in Process inventory, the company completed and transferred out 10600 units during a period. There were 5200 units in the ending Work in Process inventory that were 40% 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? 12720 equivalent units of production 14760 equivalent units of production 11660 equivalent units of production 15800 equivalent units of production