help me to understand which values to use to fill for the chart?

weighted Average Cast Flow Method under Perpetual Inventory System The following units of a particular item were wilable for sale during the calendar year Jan. 1 Inventory 4,000 units at $40 Sale 2.500 units June 10 Purch 4.500 units at $44 Sept. 2 Sale 5.000 units Nov. 15 Purchase 2.000 units at $46 The firm uses the weighted average cost method with a perpetual inventory system. Determine the cast of goods sold for each sale and the inventory balance after each ale Present the data the form the stated in this Schedule of cost of Goods Sold Weighted Average Case Flow Method Purchases cast of Goods Sold Inventory Date Quantity Unit Cast Total Cest Quantity Unit Cost Total Cost Quantity Uit Cost Total Cost ADL 10 June 20 Seot 15