M7-20 to 22 (Supplement 7A) Calculating Cost of Goods Sold and Ending Inventory under Perpetual FIFO, LIFO, and Weighted Average Cost [LO 7-S1) In its first month of operations, Literacy for the literate opened a new bookstore and bought merchandise in the order (1) 450 units at $4 on January 1,(2) 550 units at $6 on January 8, and (3) 860 units at $7 on January 29 960 units are on hand ot the end of the month M7-21 (Supplement 7A) Calculating Cost of Goods Sold and En ding Inventory under Perpetual Li FO 7-S1) Calculase the cost of goods available for sale,cost of goods sold and ending inventory under the LiFO Assume perpesia system and sold 900 units between January 9 and Jenuary 28 (Round your intermediate calculations to 2 decimal pleces Goods Avaitable for Sale Cost of Goods old Ending inent