Fill in the missing amounts in each of the eight case situations below. Each case is independent of the others. (Hint: One way to find the missing amounts would be to prepare a contribution format income statement for each case, enter the known data, and then compute the missing items.) Required: a. Assume that only one product is being sold in each of the following four case situations: Unit sold Sales Variable expenses Fixed expenses Operating income foss) Contribution margin per unit Case #1 Case #2 Case #3 10,000 4,400 10,000 $ 160,000 $ 150,000 $ 170,000 $ 120,000 62,000 60,000 28,000 32,000 $ 12,000 $ 56.000 $ 10.000 $ $ 4 $ 20 S 11 $ Case #14 4,000 240,000 184,000 120.000 (64,000) 46 b. Assume that more than one product is being sold in each of the following four case situations: (Enter "Contribution margin ratio" in percent. Round your final answers to the nearest whole dollar amount.) Sales Variable expenses Fixed expenses Operating income (loss) Average contribution margin (percentage) Case 1 Case 12 $ 400,000 $ 480,000 288.000 105,000 $ 7,800 20% Caso #3 Case 4 $ 600,000 420.000 120,000 22,000 $ (4,000) 54% $