--%>
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 : Consequence of investment in economy

    When in an economy intended investment is more than intended savings, then what is the consequence of it on the national income? Answer: When I > S, the level of

    		•
  • Q : Define Break Even point Define Break

    Define Break Even point? Elucidate with the help of saving function. Answer: Breakeven point is a point where consumption equals to income and saving is equivalent t

    		•
  • Q : Problem on tax system In the figure

    In the figure shown below, line T0 depicts a tax system which is: (1) Progressive. (2) Regressive. (3) Proportional. (4) Unbiased. (5) Recessive. 386</span></p> </div> <!-- /comment-box --> </li> </td> </tr><tr> <td> <li> <div class=

    Q : Purpose of Balance of Payment Meaning:

    Meaning: - as mentioned above, the balance of payments is a periodic accounting of international economic transactions. Each country having regular economic transactions with other countries prepares periodically the final accounts of their foreign receipts and paymen

    		•
  • Q : Explain Tax rate increase. A change in

    A change in tax rate changes the IS equation, LM equation remaining the same. Let same, let us suppose that the government raises the tax rate from 20 percent to 25 percent<

    		•
  • Q : IS-KM Model with classical supply

    discuss with the help of IS-LM model why money has no effect on output in classical supply case

    		•
  • Q : Problem on equivalent Consumer Surplus

    Tom reimburses $5.00 for a ticket to see a present hit movie. If Tom was willing to reimburse up to $7.00 for that ticket, his consumer surplus equals: (1) $5.00 (2) $2.00 (3) $7.00 (4) Tom does not receive any consumer surplus as he purchased the ticket.

  • Q : Fundamental supply and demand in foreign

    Question: Changes in currency supply and demand can be traced back to changes in fundamental supply and demand in foreign and domestic i._____________________ markets and foreign and domestic ii.___________________

    		•
  • Q : Supply use two market diagrams to

    use two market diagrams to explain how an increase in state subsidies to public colleges might affect tuition and enrollments in both public and private colleges?

    		•
  • Q : EQUILIBRIUM GDP WHAT IS THE CHANGE IN

    WHAT IS THE CHANGE IN EQUILIBRIUM gdp CAUSED BY THE ADDITION OF NET EXPORTS?

    		•