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 four following case situations: b. Assume that more than one product is being sold in each of the four following case situations: Complete this question by entering your answers in the tabs below. Required A Required B Assume that more than one product is being sold in each of the four following case situations: Case #3 Case #4 Sales $ 600,000 420,000 Case #1 Case #2 $ 500,000 $ 400,000 260,000 100,000 $ 7,000 20% Variable expenses Fixed expenses Net operating income (loss) Contribution margin ratio (percent) 130.000 $ (5,000) 20,000 $ 60%