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3. Country A's central bank holds 2,000 dollars in government securities. The Commercial banks have deposited 300 dollars with central bank. The required reserve ratio is 20%; banks are loaned up. (a) The money multiplier value is _ . (2 marks) (b) Calculate this country's money supply .(3 marks) Assignment 2, BECO 1001, 2021-2022, I, Dr. Qiao Zhuo, FBA, University of Macau Now the central bank thinks that the money supply should be increased by 900 dollars. Either an open market operation or a change in the reserve ratio is possible.