Answer:
net capital inflow of $10 billion
Step-by-step explanation:
GDP = C + I + G + X
- GDP = $100 billion
- C = $70 billion
- G = $30 billion
- I = $10 billion
$100 billion = $70 billion + $10 billion + $30 billion - $10 billion
If investment was $10 billion, it must come from foreign investors. When the capital inflow (foreign investment in domestic market) is larger than the capital outflow (domestic investment in foreign market), we have net capital inflow that increases investment account.
Capital inflows represents foreign investors investing in domestic assets, or less domestic investors spending in foreign assets.