--%>
Assignment Help - homework help

Explain Product Market Equilibrium.

To begin with, let us recall our three-sector product-market equilibrium model given as 

C + I + G = C + S + T

To this three-sector model, we now add the foreign trade-the exports (X) and imports (M). with the addition of X and M, the four-sector product-market equilibrium condition is written as 

C + I + G + (X - M) = C + S + T 

The variables X and M need some explanation and quantification exports (X) of a country depend on a variety of factors governing the foreign demand for its goods and services. The inclusion of foreign demand parameters in the domestic model of a country is neither an easy task nor a necessity for a simplified model. Therefore, X is assumed to be a constant factor, that is,

X = X

As regards imports, imports (m) of a country are a function of a number of factors, however, for the sake of analytical simplicity; imports are treated as the function the country's national income(Y). That is import function takes the following form

M = + mY

Where, M is autonomous import and m is marginal propensity to import, the proportion of marginal national income spent on imports.

With X and M defined, the four- sector product-market equilibrium condition given in can be rewritten as 

C+ I + G + X - M - mY = Y = C + S + T 

The product-market equilibrium condition can also be expressed as 

Y = C + I + G + X - M - mY

Where C = a + by d( where Yd = Y - T = disposable income)

S = - a + (I - B) y (where I - B = mps)

I = I - Hi (where h > 0) 

G = G, (where G is constant)

T =T + t y, (where T is constant tax and t is tax rate <1)

By substituting the equilibrium level of income can be expressed as

Y = a + b [Y - (T + t Y)] + I - hi + G +X - M - my

=a + by - b t - bty + I - hi + G + X - M - my 

Y = 1 / 1-b+ bt + m (a - b T + I - hi + G + X - M

Y = 1 / 1 - b (1 - t) +m (a - b T + I - hi + G + X - m 

Note that the term 1/ (1 - b + bt + m) is tax-trade multiplier which may be redesignated as mu. Also let us designate the sum of the five constants, viz a, i. G, X, and M as A. by substitution these value 

Y = mu (a - b T - hi)

(Where mu is tax-trade multiplier and A = a + I + G + X - M)

Equation  gives the aggregate demand (AD) function in a four-sector model. 

   Related Questions in Macroeconomics

  • Q : Problem on perfect replacements Imports

    Imports and American cars are much close however not perfect replacements. When the U.S. govt. tried to enhance American car sales by setting a price ceiling of P1 on imported cars: (i) The quantity of cars imported will drop/fall from Q0 to Q1. (ii)

    		•
  • Q : Systems of note issue how many systems

    how many systems of note issue are there??

    		•
  • Q : Elasticity of brain power When doubling

    When doubling your viewing of soap operas to 16 hrs per week reasons your IQ score to drop/fall from a mastermind level of 140 to a sluggish 70, your TV elasticity of brain power will be: (i) + 1.0. (ii) zero. (iii) – 1.0. (d) +0.5. (e) -0.5.

    		•
  • Q : Custodian of nations foreign exchange

    Name the institution that acts as a custodian of nation’s foreign exchange reserves? Answer: The Central Bank is an institution that acts as custodian of natio

    		•
  • Q : Limitations of using GDP as an index of

    What are the limitations of using GDP as an index of welfare of a country?A) The N.I. figures provide no indication of the population, skill and resource of the country. Thus the levels of welfare stay low.B) A higher N.I. migh

    		•
  • Q : Balance of trade IN which situation,

    IN which situation, there is a deficit in the balance of trade.

    		•
  • Q : Collecting cost-Revenue data from

    Collect cost, revenue data or other relevant data from the airbus industry and describe how you would modify the data to make it relevant to decisions a manager should make.

    		•
  • Q : Microeconomics concepts as a primary

    Write a 3 page paper using microeconomics concepts as a primary mode of analysis.  Your paper should use 1.5 line spacing, a 12 point font, and 1inch margins.  Proof read your paper.  You will lose 5 percentage points per day for each day past the

    		•
  • Q : Fiscal Monetary changes With the

    With the general equilibrium framework in place, the stage is now set for introducing fiscal and monetary changes and analysing their effects on the general equilibrium. We will first introduce a fiscal change in the form of increase in deficit-financed expenditure, a

    		•
  • Q : Law of equal marginal advantage The law

    The law of equivalent marginal advantage is violated when people: (1) think about paying a higher price that ensures better quality. (2) elect a general as president while war clouds threaten. (3) fail to allocate similar resources within equally valu

    		•