Perpetual Inventory Using Weighted Average Beginning inventory, purchases, and sales for WCS 12 are as follows: 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. 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. $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. $x Feedback Vhock My Work When the average cost method is used in a perpetual inventory system, an average unit cost for each item is computed each time a purchase is made. This unit cost is used to determine the cost of each sale until another purchase is made and a new average is computed