San Lorenzo General Store uses a periodic inventory system and the retail inventory method to estimate ending inventory and cost of goods sold. The following data are available for the month of October 2021: Beginning inventory Net purchases Net markups Net markdowns Net sales Cost Retail $36,000 $51,000 13,890 31,700 1,300 850 33,000 Required: Complete the table below to estimate the average cost of ending inventory and cost of goods sold for October using the information provided. Cost Retail Cost-to- Retail Ratio Beginning inventory Plus: Net purchases Net markups Less: Net markdowns Goods available for sale 0 0 Cost-to-retail percentage Less: Net sales Estimated ending inventory at retail Estimated ending inventory at cost Estimated cost of goods sold