Attached is the question I am having incredibly difficulties at solving. Any help is appreciated!

Flying Tomato sells a snowboard, WhiteOut, that is popular with snowboard enthusiasts. Presented below is information relating to Flying Tomato's purchases of WhiteOut snowboards during September. During the same month, 121 WhiteOut snowboards were sold at $170 each. Flying Tomato uses a periodic inventory system. Date Sept. 1 Sept. 12 Sept. 19 Sept. 26 Totals Explanation Inventory Purchases Purchases Purchases Units 25 45 24 50 144 Unit Cost $ 100 106 110 112 Total Cost $ 2,500 4,770 2,640 5,600 $ 15,510 Instructions: (a) Compute the ending inventory at September 30 and cost of goods sold using the FIFO and LIFO methods. Prove the amount allocated to cost of goods sold under each method. (b) For both FIFO and LIFO, calculate the sum of ending inventory and cost of goods sold. What do you notice about the answers you found for each method? (c) What is gross profit under each method? (d) Which method results in a larger amount reported for assets on the balance sheet? Which results in a larger amount reported for owner's equity on the balance sheet