Estimating Inventory Using Retail Inventory Method-Conventional Retail-Mart values its inventory using the conventional retail inventory method. It discloses the following data for the month of June. Compute estimated inventory at June 30 using the conventional retail inventory method. - Note: Use negative signs as appropriate in the following schedule. Estimating Inventory Using Retail Inventory Method-Conventional Retail-Mart values its inventory using the conventional retail inventory method. It discloses the following data for the month of June. Compute estimated inventory at June 30 using the conventional retail inventory method. - Note: Use negative signs as appropriate in the following schedule