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 Reduired 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 $ 448,000 $ 202,000 $ 303,000 Variable expenses 139,380 84,840 Fixed expenses 70,000 466,000 Net operating Income (los) $ 47,760 $ 56,000 $ 1,160 Contribution margin ratio (percent) 37% % 75 % %