The Brentwood Company sells blankets for $60 each. The following was taken from the inventory records during May. The company sold 20 blankets in the month of May. May 5, 10 units @ $30 each, May 12, 20 units @ $35 each, and May 30, 20 units @ $40 each. Assuming that the company uses the periodic inventory system, determine the Cost of Goods Sold for using the Weighted Average inventory cost method.