I have attached my question. Please help, I'm not sure where to start and I have trouble with Accounting.

Determine (1) the ending inventory and (2) the cost of goods sold under each of the assumed cost flow methods (FIFO, LIFO, and average-cost). (Round answerS to 0 decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST $ $ $ $ $ $ The ending inventory The cost of goods sold