(a) Derive the state-steady capital/labor ratio equation for this economy.. (b) Graphically or mathematically, but not both, determines the optimal saving rate for this econ- omy. (c) Assume there are two identical countries in the world, but they differ on the capital level. Let's denote the high capital country as the rich country and the other country as the poor country. Show why the poor country should grow faster than the rich one in this model?

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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A closed economy has a constant return to scale production technology as follows: Y =
zF(K, N), where Y is the aggregate output of consumption goods, z is the total factor produc-
tivity, K denotes aggregate capital stocks, and N is the labor size. The capital stock accumulation
function is:
K' = (1-6)K+I
where K' represents the aggregate capital stock of tomorrow, K denotes the aggregate capital
stock of today, 8 is the depreciation rate of capital, and I is today's aggregate investment. The
rate of growth in the population equals to n which is a constant over time. Consumers consume a
constant fraction of their income. i.e. C = (1 - s)Y, where s is the saving rate, Y > 0, and C is
the aggregate consumption, with 0 < s < 1.
(a) Derive the state-steady capital/labor ratio equation for this economy.,
(b) Graphically or mathematically, but not both, determines the optimal saving rate for this econ-
omy.
(c) Assume there are two identical countries in the world, but they differ on the capital level.
Let's denote the high capital country as the rich country and the other country as the poor
country. Show why the poor country should grow faster than the rich one in this model?
Transcribed Image Text:A closed economy has a constant return to scale production technology as follows: Y = zF(K, N), where Y is the aggregate output of consumption goods, z is the total factor produc- tivity, K denotes aggregate capital stocks, and N is the labor size. The capital stock accumulation function is: K' = (1-6)K+I where K' represents the aggregate capital stock of tomorrow, K denotes the aggregate capital stock of today, 8 is the depreciation rate of capital, and I is today's aggregate investment. The rate of growth in the population equals to n which is a constant over time. Consumers consume a constant fraction of their income. i.e. C = (1 - s)Y, where s is the saving rate, Y > 0, and C is the aggregate consumption, with 0 < s < 1. (a) Derive the state-steady capital/labor ratio equation for this economy., (b) Graphically or mathematically, but not both, determines the optimal saving rate for this econ- omy. (c) Assume there are two identical countries in the world, but they differ on the capital level. Let's denote the high capital country as the rich country and the other country as the poor country. Show why the poor country should grow faster than the rich one in this model?
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