Question

Y = 5,000

C = 1,000 + 0.3(Y - T)

I = 1,500 - 50r

T = 1,000

G = 1,500

where Y is total income (GDP), G is government spending, C is aggregate consumption, I is the investment function, T is government taxes and r is the real interest rates in percent.

b. Jupiter Island is a small open economy (with perfect capital mobility) in the world economy described above, though not involved in the technological innovation. Use the classical model of a small open economy to show and explain the predicted long-run effects of a technological innovation abroad on Jupiter Island's interest rates, investment, exchange rate and trade balance.

Answer #1

Since Jupiter is small economy open country with no technological innovation, hence its exports become less popular and its domestic saving Y-C-G remains unchanged.

Since we assume Y is determined by capital and labor, and consumption will only depend on disposable income.

Secondly government spending is fixed exogenous variable, also investment will not change since its small open economy and is dependent on world interest rate.

Now since neither if savings nor of investment change, the Net exports also called as S-I doesnot change.

Thus decreased popularity of economy will cause exports curve to shift inwards slightly. Net exports however remain same but real exchange rate depreciates. This depreciation of currency gives boost to net exports by making goods cheaper therefafter and as results trade balance remains same.

An economy is described by the following equations:
C
= 1,500 + 0.9 (Y – T)
I
p
= 1000
G
= 1,500
NX
= 100
T
= 1,500
Y*
= 8,800
The multiplier for this economy is 10.
Find the effect on short-run equilibrium output of:
a. An increase in government purchases by 100 from 1,500 to
1,600.
Instruction: Enter your response as an integer
value.
Short-run equilibrium output will increase to .
b. A decrease in tax collections...

Given a closed economy in the long run (classical model):
Y=F(K,L)
Y=C+I+G C=c(Y-T)
I=I(r)
G and T set by Government policy.
For the following changes in the economy, show the impact of the
change on the loanable fund market. Use a fully labeled graph.
Also state the impact of the change on the following variables:
Y, C, G, S, I and r.
1) A decrease in Government Spending.
2) A decrease in Taxes.
3) An increase in Investment demand.

Consider an economy described by the following
equations:
Y=C+I+G+NX,
Y=8,000
G=2,500
T=2,000
C=500 +
0.75(Y−T)
I=900−50r
NX=1,500−250ϵ
r=r∗=8.
a.
In this economy, solve for private saving, public saving, national
saving, investment, the trade balance, and the equilibrium exchange
rate.
b.
Suppose now that G is cut to 2,000. Solve for private saving,
public saving, national saving, investment, the trade balance, and
the equilibrium exchange rate. Explain what you find.
c.
Now suppose that the world interest rate falls from 8...

An economy is initially described by the following
equations:
C = 500 + 0.75(Y - T); I = 1000 - 50r; M/P = Y - 200r;
G = 1000; T = 1000; M = 6000; P = 2;
where Y is income, C is consumption, I is investment, G is
government spending, T is taxes, r is the
real interest rate, M is the money supply, and P is the price
level.
a. Derive the IS equation and the LM...

1. Consider an economy that produces and consumes bread and
automobiles. In the table below are data for two different
years:
Year 2010
Year 2025
Price of an automobile
$50,000
$60,000
Price of a loaf of bread
$10
$20
Number of automobiles produced
100
120
Number of loaves of bread produced
500,000
400,000
Using the year 2010 as the base year, compute the following:
nominal GDP, implicit price deflator and the CPI.
2.
Assume that GDP (Y) is 5,000. Consumption...

3. Using the following information about the current
economy:
C = 130 + 0.80(Y-T) where: C: consumption, Y: output
I = 680 -1200r T: taxes, I: Investment, r: real interest rate
T = 70 G: government
G = 110
(M/P) d = 0.6Y – 960r where: (M/P) d : money demand
Ms = 2364 Ms: money supply
P = 1.0 P: price level
(You must show the steps to derive these answers.)
a. Derive the equation for the IS curve...

In the Keynesian Model assume the following information:
C=1000+0.5Yd I=300 G=200 T=100 here Yd=Y-T. Note that I, G, T,
represents private investment, Government spending and Taxes,
respectively. What are: (i) the total injections and (ii) total
leakages What is the equilibrium level of income, consumption, and
saving and disposable income Assume that the level of output is
1200 how does the economy adjust to equilibrium, specifically
mention inventory levels. Suppose private investment will decrease
by 150, by how much the...

Consider the following short-run model of an open economy:
Y = C+I+G+NX
C = 100+(2/3)(Y-T)
I = 200
NX = X-(1/E)IM
X = (1/E)400
IM = (1/6)E Y
Domestic and foreign prices are constant with
P=P*=1. Thus, the real exchange rate is equal
to the nominal rate E.
The policy makers want to achieve the following targets for
output, consumption and net exports: YT=1200,
CT=780 and NXT=0. Show how these targets
can be achieved using government consumption (G), taxes
(T)...

Given an economy described by the following set of
equations.
Y = C(Y - T) + I(r) + G
C = 200 + 0.80(Y - T)
I = 300 - 2r
G = 400
T = 200
(M/P)d = 0.80Y - 8r
Ms = 5,600
Price-level = P = 2
What is the equilibrium level of investment?

An economy is described by the following equation:
C = 1600 + 0.6 (Y - T) - 2000 r
IP = 2500 - 1000 r
G = 2000
T = 1500
C is the consumption, IP is the planned investment, G
is the government spending, T is the net taxes, r is the real
interest rate.
This economy is a closed economy meaning that the Net Exports
are always 0, i.e. NX = 0.
a. Find an equation relating the...

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