Shellhammer Company's inventory records show the following data for the month of September: Units Unit Cost 100 $3.34 Inventory, September 1 Purchases: September 8 September 18 450 3.50 350 3.70 A physical inventory on September 30 shows 200 units on hand. Calculate the value of ending inventory and cost of goods sold if the company uses LIFO inventory costing and a periodic inventory system Ending inventory $ Cost of goods sold $