just give the answers of the blanks pls

This exercise stresses the relationships between the information recorded in a periodic inventory system and the basic elements of an income statement. Each of the five lines represents a separate set of information. You are to fill in the missing amounts. (Input all amounts as positive values except net loss which should be indicated with a minus sign. Omit the "$" sign in your response.) Beginning Net Ending Cost of Net Sales Inventory Purchases Inventory Goods Sold Gross Profit a. 290,000 76,000 104,000 35,200 145,200 b. 470.000 80.000 300,000 264.000 630,000 160,000 190,000 441,000 189,000 d. 810.000 450,000 135,000 234,000 156,000 220,000 400,000 120,000 Profit or (Loss) Expensos 72,000 20,000 150,000 270,000 (15,000)