M7-11 Calculating Cost of Goods Available for Sale, Cost of Goods Sold, and Ending Inventory under Periodic FIFO In its first month of operations, Literacy for the Illiterate opened a new bookstore and bought merchandise in the following order: (1) 300 units at $7 on January 1, (2) 450 units at $8 on January 8, and (3) 750 units at $9 on January 29. Assuming 900 units are on hand at the end of the month, calculate the cost of goods available for sale, ending inventory, and cost of goods sold under FIFO. Assume a periodic inventory system is used. M7-12 Calculating Cost of Goods Available for Sale, Cost of Goods Sold, and Ending Inventory under Periodic LIFO Complete the requirements for M7-11 assuming LIFO is used in a periodic inventory system. M7-13 Calculating Cost of Goods Available for Sale, Cost of Goods Sold, and Ending Inventory under Periodic Weighted Average Cost Complete the requirements for M7-11 assuming weighted average cost is used in a periodic inventory system.