Welghted average cost method with perpetual inventory The beginning inventory at Midright Supplies and data on purchases and soles for a three-month period ending March 31 are as folows: Kequirea: 1. Record the inventory, purchases, and cost of goods sold data in a perpetuat inventory record similar to the one allustrated in Exhibit 5 , using the weighted average cost method. Round unit cost to two decimal places, if necessary. Round all total cost amounts to the nearest dollar. 3. Determine the ending inventory cost as of March 31