Calculate gross profit rate under each of the following methods. (1) LIFO. (2) FIFO. (3) Average-cost. (Round answers to 1 decimal place, eg. 51.2\%) Calculate ending inventory, cost of goods sold, gross profit under each of the following methods. (1) LIFO. (2) FIFO. (3) Average-cost. (Round per unit cost to 3 decimal places, e.g. 15.647 and final answers to 0 decimal places, eg. 5,125.)