The Circular Flow Model: Linking Output, Income, and Expenditure
The circular flow model illustrates the equivalence of the three primary measures of GDP: output, income, and expenditure. It depicts the economy as a continuous loop where the production of goods and services (output) generates income (like wages and profits) for producers. This income, in turn, finances the spending (expenditure) on the very goods and services that were produced, thus completing the cycle.
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The Circular Flow Model: Linking Output, Income, and Expenditure
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In a simple economy, a logging company cuts down trees and sells the raw timber to a furniture maker for $500. The furniture maker then crafts a dining table from this timber and sells it to a retail store for $1,200. Finally, the retail store sells the dining table to a family for $1,500. Based on these transactions, what is the total value contributed to this economy's aggregate output?
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In a simplified economy consisting only of households and firms, a firm produces $100,000 worth of consumer goods in a year. In that same year, the firm sells $90,000 worth of these goods to households. The remaining $10,000 worth of goods are not sold and are added to the firm's inventory. Why does the total expenditure in this economy still equal the total output of $100,000?
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