Addison, Inc. uses a perpetual inventory system. Below is information about one inventory item for the month of September. Show your work for the next three questions. Sep. 1 Inventory 20 units at $20 4 Sold 10 units 10 Purchased 30 units at $25 17 Sold 20 units 30 Purchased 10 units at $30 If Addison uses FIFO, the September 17 entry for cost of goods sold would be: If Addison uses LIFO, the September 17 cost of goods sold would be: If Addison uses the weighted average cost method what is the inventory value at the end of September