FIFO and Weighted Average Cost Calculations (Periodic Inventory System) The following transactions took place with respect to Model B computers in Jackson's Computer Store during November 2017: Nov. 1 Beginning inventory. 5 Purchase of Model B computers. 11 Purchase of Model B computers. 24 Purchase of Model B computers. 30) Sale of Model B computers 60 computers at NT$1,350 14 computers at NT$1,400 12 computers at NT$1,500 18 computers at NT$1,750 40 computers at NT$2,700 Assuming the periodic inventory system, compute cost of goods sold and ending inventory using the following cost formulas for inventory: (a) FIFO, and (b) weighted average cost