PLEASE HELP! let me know if i did this correctly???

value: 15.00 points Required a. Compute the amount of ending inventory Dugan would report on the balance sheet, assuming the following cost flow assumptions: (1) FIFO, (2) LIFO, and (3) weighted average. (Round intermediate calculations and final answers to nearest whole dollar amount.) FIFO LIFO Average 675 FIFO Ending inventory ,215 823 2 value: 10.00 points b. Compute the difference in gross margin between the FIFO and LIFO cost flow assumptions. FIFO LIFO Difference Gross margin 39,684 $ 39,099 585