Perpetual inventory using weighted average Beginning inventory, purchases, and sales for WCS12 are as follows: Oct. 1 Inventory 350 units at $14 Oct. 13 Sale 200 units Oct. 22 Purchase 350 units at $16 Oct. 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 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. 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. Perpetual inventory using LIFO Beginning inventory, purchases, and sales for Item 88-HX are as follows: July 1 Inventory 108 units @ $32 July 8 Sale 86 units July 15 Purchase 120 units @ $35 July 27 Sale 101 units Assuming a perpetual inventory system and using the last-in, first-out (LIFO) method, determine (a) the cost of goods sold on July 27 and (b) the inventory on July 31. a. Cost of goods sold on July 27 b. Inventory on July 31