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Answer to Question #63265 in Macroeconomics for Aisha

Question #63265
You are given the following information about the commodity and Money markets of a closed economy without government intervention.

The commodity market
Consumption function: C = 50 + 2/5Y
Investment function: I = 790 – 21r
The Money Market
Precautionary and Transactions demand for money: MDT = 1/6 Y
Speculative demand for money: MDS = 1200 -18r
Money supply: MS = 1250
Required:
(i) Determine the equilibrium levels of income and interest rate for this economy.
(ii) Using a well labelled diagram, illustrate the equilibrium condition in part (i) above.
Expert's answer
C = 50 + 2/5Y, I = 790 – 21r
MDT = 1/6 Y, MDS = 1200 -18r, MS = 1250
In equilibrium Y = C + I and MD = MDT + MDS = MS, so:
50 + 2/5Y = 790 – 21r
1/6 Y + 1200 - 18r = 1250,
2/5Y + 21r = 740
1/6Y - 18r = 50 -> 2/5Y - 43.2r = 120, so if we subtract second equation from the first, we will get:
64.2r = 620
r = 9.66%
Y = (740 - 21*9.66)/0.4 = $1343
So, r = 9.66% and Y = $1343 are the equilibrium levels of income and interest rate for this economy.

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Comments

Assignment Expert
25.11.16, 14:46

Dear Aisha,
please use panel for submitting new questions

Aisha
20.11.16, 10:21

Using a well labelled diagram, illustrate the equilibrium condition in part (i) above. I would to know how it will be like. Thanks.

Aisha
11.11.16, 13:34

Thank you.

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