Suppose that the economy has the following money supply and demand equations: Money Supply: M = 8000 Money Demand: M= 10,000 – 40,000r where money is in billions of dollars and interest rates, r , is written as a decimal (e.g., an interest rate of 10% would be written as .1 in the equation). A. Determine the equilibrium interest rate and quantity of money. B. What will happen in the money market if the interest rate is currently 10%?

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Chapter21: The Influence Of Monetary And Fiscal Policy On Aggregate Demand
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Suppose that the economy has the following money supply and demand equations:

Money Supply: M = 8000
Money Demand: M= 10,000 – 40,000r
where money is in billions of dollars and interest rates, r , is written as a decimal
(e.g., an interest rate of 10% would be written as .1 in the equation).
A. Determine the equilibrium interest rate and quantity of money.
B. What will happen in the money market if the interest rate is currently 10%?

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