Fill in the missing amounts in each of the eight case situations below. Each case is independent of the others. 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: Note: Loss amounts should be indicated by a minus sign. Case 1 Case 2 Case 3 Case 4 Sales $ 456,000 $ 193,000 $ 300,000 Variable expenses 278,160 121,590 75,000 Fixed expenses 220,320 67,000 468,000 Net operating income (loss) $ 57,840 $ 4,410 $ 105,530 $ (2,000) Contribution margin ratio (percent) 39 % 37% 83 % % < Required A Required B