Consider Macronesia, a country with three companies: Macrosoft, CardboardCo, and BoardCo. Macrosoft makes Monopoly board games using boards and cards as its intermediate goods. CardboardCo makes cardboard. BoardCo makes boards and cards using cardboard. Their respective income statements showing revenues, expenses and profit are below (there is no interest and rent expense):

CardboardCo BoardCo MacroSoft
Revenues $12 Revenues $32 Revenues $67
Expenses: Wages $7 Expenses: Wages $12 Expenses: Wages $20
Cardboard $12 Board and Cards $32
Profit $5 Profit $8 Profit $15

Compute GDP using three approaches: Expenditure, Income and Value Added