Answer :
Based on the information given regarding the reserve requirements, there'll be an increase in the money supply by $4000.
A reserve requirement simply means a regulation by the Central Bank where commercial banks set a minimum amount that must be held in liquid assets.
Since the reserve requirement is 25%, a new deposit of $1,000 leads to a potential will lead to an increase in the money supply of $4000. This was calculated thus:
= $1000 / 25%
= $1000 / 0.25
= $4000
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