Price mechanism describes the interaction between buyers and sellers and how the forces of demand and supply in a free market determine the prices of commodities. The price mechanism also determines the allocation of scarce resources between competing needs. Resources are allocated to where there is a shortage while they are moved away from where they are least demanded. When the demand for milk exceeds the supply, there is a shortage and hence the price increases. This encourages milk farmers to produce more milk for enhanced revenue.
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