Amount of open market purchase = targeted increase in money supply / money multiplier
Money multiplier = 1 / reserve requirement
1/ 0.05 = 20
$35 million / 20 = $1.75 million
Amount of open market sale = $75 million / 20 = $3.75 million
We'll assume that banks try to maintain no excess reserves because they receive relatively low return on their reserves that are deposited with the Federal Reserve. A bank's excess reserves are lent up once they reach zero.
The quantity of money that banks can lend is decreased when the reserve requirement is increased.
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