Answer: $400 million
Explanation:
Given that,
X = $85 million
IM = $135 million
Budget balance = $100 million
Private savings = $250 million
Net capital inflow = imports (IM) - exports (X)
= $135 million - $85 million
= $50 million
Investment spending = Private savings + Budget balance + Net capital inflow
= $250 million + $100 million + $50 million
= $400 million