You have the following information for Skysong Inc. for the month ended October 31, 2022. Skysong uses a periodic method for inventory. Date Description Units Unit Cost or Selling Price Oct. 1 Beginning inventory 54 $26 Oct. 9 Purchase 124 28 Oct. 11 Sale 109 37 Oct. 17 Purchase 104 29 Oct. 22 Sale 62 42 Oct. 25 Purchase 66 31 Oct. 29 Sale 107 42 (a1) Your Answer Correct Answer (Used) * Your answer is incorrect. Calculate the weighted average cost. (Round answer to 3 decimal places, e.g. 5.125.) Weighted average cost per unit $ 28.51 (a2) Calculate ending inventory, cost of goods sold, gross profit under each of the following methods. (1) LIFO. (2) FIFO. (3) Average-cost. (Round per unit cost to 3 decimal places, eg. 15.647 and final answers to decimal places, eg. 5,125.) LIFO FIFO AVERAGE-COST The ending inventory $ $ $ The cost of goods sold $ $ $ Gross profit $ $ $ $ In its first month of operations, Swifty Corporation made three purchases of merchandise in the following sequence: (1) 170 units at $5, (2) 470 units at $6, and (3) 145 units at $7. (a1) Your answer is incorrect. Calculate the weighted average unit cost. (Round answer to 3 decimal places, e.g. 15.225.) Weighted average unit cost $