Fill in the missing amounts in each ofthe eight case situations below' Each case is independent of the others. (Hint: One way to nd 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: 3. Assume that only one product is being sold in each of the following four case situations: Unit sold 18,000 216,000 60,000 _- 120,000 _ $ (12mm Sales Variable expenses Fixed expenses Operating income (loss) Contribution margin per unit . Assume that more than one product is being sold in each of the following four case situations: (Enter "Contribution margin ratio" in ercent. Round your final answers to the nearest whole dollar amount.) _ __ _ Variable expenses Fixed expenses Operating income (loss) Average contribution margin (percentage)