Answer:
1. $50 million
2. $50 million
3. In a closed economy, national savings equals investment
Explanation:
For a closed economy, the formula for calculating GDP = C + I + G
Where C - Consumption
I - investment
G - Government Spending
To find investment ,
750 = 300 + I + 400
I = $ 50 million
National savings = private saving + Government saving
Private saving = Y − T − C
750 - 300 - 250 = $200 million
Public savings = T - G
250 - 400 = $-150 million
National savings = $200 - $ 150 million = $ 50 million
Nb - All numerical values are in $ millions