Current Attempt in Progress Martinez-Mart Centre Inc. opened for business on May 1 , and uses a perpetual inventory system. During May, the company had the following purchases and sales for one of its products: Determine the cost of goods sold and cost of ending inventory using (1) FIFO and (2) average cost. (Round Average answers to 2 decimal places, eg. 5.75.) eTextbook and Media Attempts: 0 of 3 used