help me with this practice question

The Luann Company uses the periodic inventory system. The following July data are for an item in Luann's inventory: (1) Using FIFO, the company's Cost of goods sold is and Cost of ending inventory is (2) Using LIFO, the company's Cost of goods sold is and Cost of ending inventory is (3) Using weighted-average cost, the company's Cost of goods sold is: and Cost of ending inventory is