The answer is $100 million.
The reserve ratio is the percentage of a commercial bank's deposits that it must retain in cash as a reserve in case of large client withdrawals, as determined by the central bank.
The reserve ratio is a significant monetary policy instrument used by the Federal Reserve in the United States to boost or decrease the economy's money supply.
Banks require an RRR of 8% for demand deposits, not for funds received through the selling of treasury bills to the FED, hence Wells Fargo will be free to raise its loans by $100 million.
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