ses

IP computations. Fill in the blanks for each of the following independent cases.

$\backslash$table$[[$Case$,$Revenues,$\backslash$table$[[$Variable$],[$Costs$]],$Fixed Costs,Total Costs,$\backslash$table$[[$Operating$],[$Income$]],\backslash$table$[[$Contribution$],[$Margin Percentage$]]],[$a$.,,$$$800,,$$$1,200,$$$1,000,],[$b$.,$$$2,400,,$$$400,,$$$700,],[$c$.,$$$900,$$$500,,$$$900,,50\%$