Élasticité de l’offre par la méthode du pourcentage

Price elasticity of supply is calculated by dividing the percentage change in quantity supplied by the percentage change in price. For example, if quantity supplied increases by 20 percent when price rises by 20 percent, the elasticity equals one. This ratio reveals how responsive producers are to price changes and helps businesses anticipate production adjustments.

Unitary elasticity occurs when the percentage change in quantity supplied exactly equals the percentage change in price, resulting in an elasticity value of one. This means producers increase production proportionally to price increases. Understanding unitary elasticity helps determine degrees of elasticity of supply across different markets.

When elasticity exceeds one, supply is elastic, meaning quantity supplied changes proportionally more than price changes. A small price increase triggers a larger percentage increase in production. This indicates producers are highly responsive to price signals and can quickly adjust output levels.

Inelastic supply has an elasticity value less than one, meaning quantity supplied changes less than proportionately to price changes. Unlike elastic supply, where producers respond significantly to price increases, inelastic supply shows limited production response. This distinction helps businesses understand production constraints and market responsiveness.

The percentage method quantifies supply responsiveness, enabling businesses to predict how price changes affect production decisions and market dynamics. By calculating elasticity, companies determine whether small price adjustments yield proportional output changes. This analysis supports strategic pricing and production planning.

If a toy car factory produces 1000 units at $10 per car and increases production to 1200 units when price rises to $12, the percentage change in quantity is 20 percent and price change is 20 percent. Dividing these percentages yields an elasticity of one, indicating unitary elasticity where production increases match price increases proportionally.

The elasticity value determines supply classification: values greater than one indicate elastic supply, values less than one indicate inelastic supply, and values equal to one indicate unit elastic supply. These factors affecting elasticity of supply include production capacity, input availability, and time horizons for adjustment.