Final answer:
To calculate the inventory turnover, divide the cost of goods sold by the average inventory. The days' sales in inventory can be calculated by dividing 365 days by the inventory turnover.
Step-by-step explanation:
To calculate the inventory turnover, we need to divide the cost of goods sold by the average inventory. The average inventory can be calculated by adding the beginning and ending inventory and dividing by 2. For Year 1, the average inventory is $880,000 ($900,000 + $860,000 / 2) and for Year 2, it is $750,000 ($860,000 + $640,000 / 2). Therefore, the inventory turnover for Year 1 is 9.09 ($8,000,000 / $880,000) and for Year 2 it is 12.27 ($9,200,000 / $750,000).
The days' sales in inventory can be calculated by dividing 365 days by the inventory turnover. For Year 1, the days' sales in inventory is approximately 40.16 days (365 / 9.09) and for Year 2 it is approximately 29.83 days (365 / 12.27).