To find the size of the bank's actual reserves, we can use the reserve requirement and the outstanding cheque deposits.
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First, determine the required reserves based on the reserve requirement: \[ \text{Required Reserves} = \text{Reserve Requirement} \times \text{Outstanding Cheque Deposits} \] \[ \text{Required Reserves} = 0.25 \times R80,000 = R20,000 \]
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The bank's actual reserves can be calculated by adding the excess reserves to the required reserves: \[ \text{Actual Reserves} = \text{Required Reserves} + \text{Excess Reserves} \] \[ \text{Actual Reserves} = R20,000 + R4,000 = R24,000 \]
So, the size of the bank's actual reserves is R24,000.