LIFO FIFO AVERAGE-COST The ending inventory 3810 4257 $ 4025.47 The cost of goods sold $ 7407 $ 6960 $ 7191.53 Gross profit 4150 $ 4597 $ 4365.47 e Textbook and Media Attempts: 1 of 3 used (a3) X Your answer is incorrect. Calculate gross profit rate under each of the following methods. (1) LIFO. (2) FIFO.(3) Average-cost. (Round answers to 1 decimal place, e.g. 51.2%.) LIFO FIFO AVERAGE-COST Gross profit rate 31.6 % % %