Inventory turnover and number of days' sales in inventory Financial statement data for years ending December 31 for Tango Company follow: 20Y7 20Y6 Cost of goods sold Inventories: $3,760,960 $3,966,820 Beginning of year End of year 781,100 854,100 744,600 781,100 a. Determine the inventory turnover for 20Y7 and 20Y6. Round your answers to one decimal place. 20Y7 20Y6 Inventory turnover b. Determine the days' sales in inventory for 20Y7 and 20Y6. Use 365 days a year. Round your answers to one decimal place. Number of days' sales in inventory 20Y7 20Y6 days days c. Are the changes in inventory turnover and the number of days' sales in inventory from 20Y6 to 20Y7 favorable or unfavorable? Periodic Inventory by Three Methods The units of an item available for sale during the year were as follows: Jan. 1 Inventory 6 units at $47 Feb. 17 Purchase Jul. 21 Purchase Nov. 23 Purchase 12 units at $48 6 units at $51 19 units at $51 There are 6 units of the item in the physical inventory at December 31. The periodic inventory system is used. Round average unit cost to the nearest cent and final answers to the nearest whole dollar, if required. a. Determine the inventory cost by the first-in, first-out method. $ b. Determine the inventory cost by the last-in, first-out method. c. Determine the inventory cost by the weighted average cost method. Round average unit cost to the two decimal places, and round your final answer to the nearest dollar.