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: (Loss amounts should be indicated by a minus sign.) Case #1 Case #2 Case #3 Case #4 Sales $ 454,000 $ $ 197,000 135,930 307,000 104,380 Variable expenses Contribution margin Fixed expenses Net operating income (loss) Contribution margin ratio (percent) 54,000 S $ 467,000 88,200 80 % $ 82,220 43 % (15,380) % %