Consider a closed-economy. The economywide expected future marginal product of capital is MPKf = 50 − 0.05K^f , where Kf is the future capital stock. The depreciation rate of capital, δ, is 10% per period. The current capital stock, K, is 900 units of capital. The real price of a unit of capital is 8 unit of output. Firms pay taxes equal to 20% of their output. The consumption equation is C = 100 + 0.6Y −100r, where C is consumption, Y is output, and r is the real interest rate. Government spending equals 150 and full-employment output is 1000. (a) Suppose the current real interest rate is 10% per period. What are the values of the tax-adjusted user cost of capital, the desired future capital stock, and the desired level of investment? (b) When the real interest rate equals 10%, what are the desired levels of consumption and saving (assuming output is at the full-employment level)? 10 (c) Is the goods market in equilibrium when the real interest rate equals 10%? Provide an intuitive explanation to your answers.
Consider a closed-economy. The economywide expected future marginal product of capital is MPKf = 50 − 0.05K^f , where Kf is the future capital stock. The
(a) Suppose the current real interest rate is 10% per period. What are the values of the tax-adjusted user cost of capital, the desired future capital stock, and the desired level of investment?
(b) When the real interest rate equals 10%, what are the desired levels of consumption and saving (assuming output is at the full-employment level)? 10
(c) Is the goods
(d) Solve for the real interest rate that clears the goods market. What are the goods market-clearing values of consumption, saving, and investment? What is the desired amount of capital stock in this equilibrium?
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