Can someone help me with this accoutning problem related to cash flow statement?

(The following information applies to the questions displayed below.) Laker Company reported the following January purchases and sales data for its only product. Date Activities Units Acquired at Cost Jan. 1 Beginning Inventory 140 units @ $ 600 = $ 840 Jan. 10 Sales Jan. 20 Purchase 60 units @ $5.00 = 300 Jan. 25 Sales Jan. 30 Purchase 180 units @ $ 4.50 = 810 Units sold at Retail 100 units @ $ 15 80 units @ $ 15 Totals 380 units $ 1,950 180 units Laker Company uses a perpetual inventory system. For specific identification, ending inventory consists of 200 units, where 180 are from the January 30 purchase, 5 are from the January 20 purchase, and 15 are from beginning inventory