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Equivalent Units of Materiats Cost. The Roiling Department of Kraus Steel Company had 3,300 tons in beginning work in process inventory (60% complete) on October 1 . During October, 54,300 tons were completed. The ending work in process inventory on October 31 was 2,700 tons (70\% complete). What are the total equivalent units foc derect materials for October if materials are added at the beginning of the process? x units