Rate of profit
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In economics, the profit rate refers to the relative profitability of an investment project or of a capitalist enterprise or for the capitalist economy as a whole. It is similar to the idea of the rate of return on investment.
In Marxian political economy, the rate of profit (r) would be measured as
- r = (surplus-value)/(capital invested).
where surplus-value corresponds to unpaid labor in the production process or to profits, interest, and rent (property income).
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