Intermediate macroeconomics - Econ 304 Summer 2012 Problem


Econ 304 Summer 2012 Problem Set #2 Due by 11:59 PM MDT June 22(Note that the points only add up to 49. You get one free point on this assignment)NAME:________________________1. (3 points each)Consider the following Cobb-Douglas Production function: a.Compute the value of Y for K = 100 and L = 25b.Define the term constant returns to scale.c.Now show that the production function for this problem has constant returns to scale by completing the following table:KLY=K^(1/2)* L^(1/2)=vKL10025 20050 2,500625 d.Using the original values of K and L (100 and 25), compute the marginal product of labor by calculating how much output would rise if an additional worker were employed. This can be done by substituting L = 26 and K = 100 in the production function and noting the increase in Y.e. If firms had decided to employ 25 workers (L = 25) what would the equilibrium wage be?2. ( 4 points each)Consider an economy described by the following equations:Y = C + I + GY = 5,000G = 1,000T = 1,000C = 250 + 0.75( Y - T)I = 1,000 - 50ra.In this economy, compute private saving, public saving, and national savingb.Find the equilibrium interest ratec.Now suppose that G rises to 1,250. Compute private saving, public saving, and national savingd.Find the new equilibrium interest rate3. ( 3 points each)Suppose that the money demand function takes the form a.If output grows at rate g, at what rate will the demand for real balances grow (assuming constant nominal interest rates)?b.What is the velocity of money in this economy?c.If inflation and nominal interest rates are constant, at what rate, if any, will velocity grow?d.How will a permanent (once-and-for-all) increase in the level of interest rates affect the level of velocity? How will it affect the subsequent growth rate of velocity?4. (3 points each)a.What is the inflation tax?b.In what ways is the inflation tax a tax, and in what ways is it not a tax?c.Who pays for the inflation tax?