Perpetual Inventory Using Weighted Average Beginning inventory, purchases, and sales for WC512 are as follows: a. Assuming a perpetual inventory system and asing the weighted average method, determine the weighted average unit cost after the October 22 purchase. Round your answer to two decimal places. X per unit b. Assuming a perpetual inyentory syi. am and using the weighted average method, determine the coat of goods sold on October 29 . Round your "a verage unit cost" to two decimal places. x 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. Fecthas rchich wivin When the average cost method is used in a perpetual inventory system, an average unt cost for each tem is computed each time a purchase is made. This unt cost is used to delermine the cost of each salo unta another purchase is made and a new average is computed