Perpetual Inventory Using Weighted Average 13 22 29 Beginning inventory, purchases, and sales for WCS12 are as follows: Oct 1 Inventory 300 units at $8 Sale 175 units Purchase 375 units at $10 Sale 280 units a. Assuming a perpetual Inventory system and using the weighted average cost method, determine the welghted average unit cost after the October 22 purchase. Round your answer to two decimal places X 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 faverage unit cost to two decimal places