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: Case #1 Case #2 Case #3 Case #4 Unit sold Sales Variable expenses Fixed expenses Net operating income (loss) Contribution margin per unit 9,900 20,900 4,800 $336,600 420,000 $ 134,400 148,500 271,700 87,000 177,000 89,000 $117,000 135,900 (26,600) 21 $ b. Assume that more than one product is being sold in each of the four following case situations: Case #1 Case #2 Case #3 Case #4 Sales Variable expenses Fixed expenses Net operating income (loss) Average contribution margin ratio (percent) $455,000204,000 140,760 58,000 $ 305,000 76,250 474,000 S 58,350 37% $ 78,800$ 750 80%