Required information [The following information applies to the questions displayed below.) The following are the transactions for the month of July. Unit Selling Price Unit Cost $10 13 July 1 July 13 July 25 July 31 Units 42 210 180) 152 Beginning Inventory Purchase Sold Ending Inventory $ 15 Required: a. Calculate cost of goods available for sale and ending inventory under weighted average cost. Assume a periodic Inventory system is used. b. Calculate sales, cost of goods sold, and gross profit, under weighted average cost. Assume a periodic Inventory system is used. Complete this question by entering your answers in the tabs below. Required A Required B