CVP analysis computations. In the following data, fill in the blanks for each of the four independent cases.

Case Revenues Variable Costs Fixed Costs Total Costs Operating Income Contribution Margin Percentage Contribution Margin a $ — $600 $ — $ 960 $1,440 — 1,800 b 2,400 — 360 — 240 — 600 c 1,200 840 — 1,200 —

— 360 d 1,800 — 360 1,440 —

40% —