Required Information In its first month of operations, Literacy for the Illiterate opened a new bookstore and bought merchandise in the following order: (1) 400 units at $9 on January 1, (2) 600 units at $10 on January 8 , and (3) 790 units at $11 on January 29 . Assume 990 units are on hand at the end of the month. Calculate the cost of goods avallable for sale, cost of goods sold, and ending inventory under the weighted average cost flow issumptions. Assume perpetual inventory system and sold 800 units between January 9 and January 28. (Round your intermediate calculations to 2 decimal places.)