Printem E Calculator Perpetual Inventory Using Weighted Average Beginning inventory, purchases, and sales for WC512 are as follows: Oct. 1 Inventory 350 units at $11 Sale 200 units 8 13 22 Purchase 350 units at $14 29 Sale 400 units a. Assuming a perpetual inventory system and using the weighted average method, determine the weighted average unit cost after the October 27 purchase Round your answer to two decimal places per unit b. Assuming a perpetual inventory system and using the weighted average method determine the cost of goods said on October 20. Round your average unit cost to two decimal places c. Assuming a perpetual inventory system and using the weighted average method, determine the entry on your to two decimal places