MC Qu. 101 Metaline Corp. uses the weighted... Metaline Corp. uses the weighted average method for inventory costs and had the following information available for the year. Calculate the equivalent units of production for the year: Beginning Work in Process (50% complete, $2,100) Ending inventory of Work in Process (90% complete) Total units started during the year 300 units 500 units 4,200 units Multiple Choice 4,200 units. O 4,650 units. O 4.450 units. O 5,000 units. O 4,300 units