Can you please explain how to solve the following questions?

Fill in the appropriate blanks for each of the ind Company A epen Sales revenue Beginning inventory Net purchases Ending inventory Cost of goods sold Gross profit Operating expenses I ncome before taxes 52,300 193,400 51,600 85,900 69100 16,800 dent situations below. Company B $351,000 259,000 118,100 132,500 50,700 81500 Company C $537,000 89,000 61,500 424,500 49,300