Perpetual Inventory Using Weighted Average Beginning inventory, purchases, and sales for WCS12 are as follows: Oct. 1 Inventory 320 units at $15 13 Sale 150 units 22 Purchase 330 units at $16 29 Sale 200 units a. Assuming a perpetual inventory system and using the weighted average method, determine the weighted average unit cost after the October 22 purchase. Round your answer to two decimal places. per unit b. Assuming a perpetual inventory system and using the weighted average method, determine the cost of goods sold on October 29. Round your "average unit cost" to two decimal places. $ c. Assuming a perpetual inventory system and using the weighted average method, determine the inventory on October 31. Round your "average unit cost" to two decimal places. Lower-of-Cost-or-Market Method On the basis of the following data, determine the value of the inventory at the lower-of-cost-or-market by applying lower-of-cost-or-market to each inventory item, as shown in Exhibit 10. Market Value per Unit (Net Realizable Value) Item Inventory Quantity Cost per Unit JFW1 126 $31 $28 SAW9 263 15 18