Answer: $51 million
Step-by-step explanation:
Firstly, we need to calculate the required reserve which will be:
= $500 × 15%
= $500 million × 0.15
= $75 million
Then, the excess reserve will be:
= $126 million - $75 million
= $51 million
Therefore, the maximum deposit outflow it can sustain without running into reserve deficiency is $51 million.