Perpetual inventory using weighted average Beginning inventory, purchases, and sales for WCS12 are as follows: a. Assuming a perpetual inventory system and using the weiphong dyetage mectod, determine the weighted overage 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 cont of goods sold on detober 29 . Round your "average unit cost" to two decimal places. c. Assuming a perpetual inventory system and using the weighted average method, determibe the inventory on October 3 . Round your "average unit cost" to two decimal places