Some data that at first might seem puzzling: The share of GDP devoted to investment was similar for the United States and South Korea from 1960-1991 . However, during these same years South Korea had a 6 percent growth rate of average annual income per person, while the United States had only a 2 percent growth rate. If the saving rates were the same, why were the growth rates so different?
The explanation is based on the concept of diminishing returns to capital. A country that has a lot of income, and so a lot of capital, gains less by adding more capital than does a country that currently has little capital. It is easy to envision how a poor country without much capital could increase its output considerably with even a little more capital.
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Over the long-run, fluctuations in the growth rate in output are primarily driven by fluctuations in
a. investment in capital. b. educational attainment. c. fluctuations in the labor force. d. fluctuations in labor productivity.
If a business produces and sells only one unit of a good, its profit would be the
a. price received for the good b. price of the product minus the cost of the resources used to produce the product c. return paid to the firm's bank on its outstanding loans d. price of the product minus the wages paid for the labor used to produce it e. wages paid for the labor used to produce the product minus the price