Answer:
The level of private saving in Centralia is $7 trillion.
Step-by-step explanation:
The economy of Centralia has no trade and no government.
The level of GDP is given as $25 trillion.
Consumer spending is $18 trillion.
The level of private savings, in this case, will be the difference between the GDP or total income and consumption spending.
Private savings
= $25 trillion - $18 trillion
= $7 trillion