Perpetual Inventory Using Weighted Average Beginning inventory, purchases, and sales for WCS12 are as follows: Oct. 1 Inventory 13 Sale 320 units at $10 190 units 370 units at $12 22 Purchase 29 Sale 200 units 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. per unit