Step-by-step explanation:
The computation is shown below:
As we know that
Real Deficit = Nominal Deficit - (Inflation ×Total Debt)
a.
Real deficit = $90 - (11% × $1,000)
= - $20 billion surplus
b.
Real deficit = $150 - (11% × $1,000)
= $40 billion deficit
c.
Real deficit = $40 - (-5% × $300)
= $55 billion deficit
d.
Real deficit = -$50 - (1% × $3,000)
= - $80 billion surplus