Perpetual Inventory Using Weighted Average Beginning inventory, purchases, and sales for wCs12 are as follows: a. Ascuming a perpetusil inventory system and using the weighted average method, determine the weighted average unit cost after the October 22 purchase. Round you answer to two decimal places. x per unit b. Assuming a perpetual inventofy system and using the weighted average method, determine the cost of goods sold on Octeber 29 , Round your "average unit coit" to two decimal piaces. x c. Assuming a perpetual inventory system and using the weighted average method, determine the inventory on October 31, Round your "average ianit cost" to two decimal places