Economics Elasticity
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The principles of supply and demand enable us to make certain predictions about how households and firms are likely to behave in market. Also when commodities are measured in different units it is often best examine the percentage change. In other words:
The measure of the responsiveness of the quantity demanded to a change in price is called the price elasticity of demand.
We can state that mathematically:
The price elasticity of demand is the percentage change in the quantity of a good demanded divided by the corresponding percentage change in its price.
OR
Percentages changes should always carry the sign (minus or plus) of the change. . Positive changes, or increase, take a (+). Negative changes, or decreases, take a (-). The law of demand implies that price elasticity of demand is nearly always a negative number: Price increases (+) will lead to decreases in quantity demanded (-), and vice versa.
To understand better there is an example below:
There are two different types of demand: The elastic and inelastic demand...