The Matsui Lubricants plant uses the weighted average method to account for its work-in-process inventories. The accounting records show the following information for a particular day Beginning WIP inventory Direct materials Conversion costs Current period costs Direct materials Conversion costs 976 272 11,440 6,644 Quantity information is obtained from the manufacturing records and includes the following. Beginning inventory Current period units started Ending inventory 600 units (60% complete as to materials, 53% complete as to conversion) 4,000 units 1,200 units (40% complete as to materials, 20% complete as to conversion)