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 8,900 19.500 4.100 118.900 Sales S 343.200 $ 293.700 $ 115.700 Variable expenses 195.000 Fixed expenses 99.000 90.000 175.000 10,900 $ S 183.000 $ 44.900 Net operating income (loss) Contribution margin per unit S 13 14 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 #4 457.000 191.000 $ 304,000 Variable expenses 97,280 120,330 58.000 Fixed expenses 474,000 $ 60.380 (13.280) Net operating income (loss) Contribution margin ratio (percent) 39% 77%