12....... In the economy of UNAM in 2012 exports were $35, GDP was $233, imports were $46, government spending was $55 and consumption was $77. What was UNAM\'s investment in 2012? Solution Ans) Since, GDP = C + I + G +(Ex - Im) where, GDP is the Gross Domestic Product (Ex-Im)= Net exports = (Exports - imports) C = total spending by consumers I = is total Investment (spending on goods and services) by business G = total spending by Government Now we have, GDP = C + I + G +(Ex - Im) Thus, $233= $77+ I + $46 + ( $35 - $46) I = $233-$77-$46 - $35 + $46 I = $121.