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) Please don't use symbols such as commas and the dollar sign ($)when you write your answers ) ) Use the percent-of-sales method to prepare a pro forma income statement for the year ended December 31, 2021, for General Systems, Inc. General Systems, Inc. estimates that its sales in 2021 will be 6000000 . Interest expense is to remain unchanged at $10500 and the firm plans to pay cash dividends of 160000 during 2021. General Systems, Inc.'s income statement for the year ended December 31, 2020 is shown below: Income statement General Systems, Inc. For the year ended December 31,2020 $4200000 Sales Revenue Less: Cost of Goods sold 3570000 Gross profits $630000 Less: Operating expenses 210000 Operating profits $420000 Less: Interest expense 105000 Profit before tax $315000 Less: Taxes (30%) 94,500 Net profit after taxes $220500 Less: Cash dividends 120000 To retained earnings $100500 What is the cost of goods sold in year 2021? What is the gross profit in year 2021? What are the operating expenses in year 2021? What is the operating profit in year 2021? What is the profit before tax in year 2021? What is the profit after tax in year 2021? How much goes to retained earnings in year 2021