Perpetual Inventory Using LIFO Beginning inventory, purchases, and sales for Item PK95 are as follows: March 1 Inventory 5 Sale 11 Purchase 21 Sale 80 units @ $19 64 units 89 units @ $23 75 units Assuming a perpetual inventory system and using the last-in, first-out (LIFO) method, determine (a) the cost of merchandise sold on March 21 and (b) the inventory on March 31. a. Cost of merchandise sold on March 21 1,725 b. Inventory on March 31 Perpetual Inventory Using Weighted Average Beginning inventory, purchases, and sales for Meta-B1 are as follows: July 1 Inventory 12 Sale 23 Purchase 26 Sale 100 units at $400 70 units 120 units at $450 110 units a. Assuming a perpetual inventory system and using the weighted average method, determine the weighted average unit cost after the July 23 purchase. per unit b. Assuming a perpetual inventory system and using the weighted average method, determine the cost of the merchandise sold on July 26 c. Assuming a perpetual inventory system and using the weighted average method, determine the inventory on July 31