Based on the information given the aggregate expenditures must be: $295 billion.
Using this formula
Aggregate expenditure= Consumption expenditures+ Total investment + Exports
Where:
Consumption expenditures=$200 billion
Total investment= $50 billion
Exports=$45 billion
Let plug in the formula
Aggregate expenditure=$200 billion+$50 billion+$45 billion
Aggregate expenditure=$295 billion
Inconclusion the aggregate expenditures must be: $295 billion.
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