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liraira [26]
4 years ago
8

An economy has full-employment output of 5000. Government purchases are 1000. Desired consumption and desired investment are giv

en by:
Cd= 3600 - 2000r + 0.10Y

Id = 1200 - 4000r

Where Y is output and r is the expected real interest rate:

(a) Find the real interest rate that clears the goods market. Assume that output equals full-employment output.

(b) Calculate the amount of saving, investment, and consumption in equilibrium.
Business
1 answer:
V125BC [204]4 years ago
5 0

Answer:

a. real interest rate is 0.217 or 21.7%.

b. saving = 134 , investment is 332 ,  consumption is 3666.

Explanation:

a) Y = Cd + Id + Gd

Where Y= output

Cd= consumption

Id= Investment purchases

Gd=Government purchases

Y= (3600 - 2000r + 0.10Y) + (1200 - 4000r) + 1000

Y=5800-6000r+0.10Y

0.9Y=5800-6000r

At full employment Y=5000

Putting the value of Y in the above equation

0.9*5000=5800-6000r

5800-4500=6000r

r=0.217

Therefore real interest rate is 0.217 or 21.7%.

(b) Sd = Y - Cd - G

where Sd is national saving

Sd = Y - (3600 - 2000r + 0.1Y) - 1200

Sd = 5000-(3600 - 2000*0.217 + 0.1*5000) - 1200 =5000-3600+434-500-1200 = 134

Therefore, saving = 134

Id= 1200-4000*0.217 =332

Therefore, investment is 332

Cd= 3600-2000r+0.10Y=3600-434+500=3666

Therefore, consumption is 3666.

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