Using FIFO method, calculate (i) cost of goods sold, (ii) ending inventory, and (iii) gross profit. (Assume sales returns had a cost of $21 and purchase returns had a cost of $24.) Cost of goods sold $ Ending Inventory $ $ Using FIFO method, calculate (i) cost of goods sold, (ii) ending inventory, and (iii) gross profit. (Assume sales returns had a cost of $21 and purchase returns had a cost of $24.) Cost of goods sold $ Ending Inventory $ $