Exercises 3-21 CVP computations. Fill in the blanks for each of the following independent cases. Variable Operating Contribution Case Revenues Costs Fixed Costs Total Costs Income Margin Percentage a. $600 $800 $1,600 $ 900 D. $2,500 $200 C. $ 500 $300 $500 d. $1,200 $200 25% 3-22 CVP computations. Davidson Manufacturing sold 435,000 units of its product for $74 per unit in 2020. Variable cost per unit is $62, and total fixed costs are $1,940,000. 1. Calculate (a) contribution margin and (b) operating income. 2. Davidson's current manufacturing process is labor intensive. Kate Schmidt, Davidson's production manager, has proposed investing in state-of-the-art manufacturing equipment, which will increase the