Alfred Marshall Price Elasticity Of Demand -

Demand is elastic (1.2 > 1). The price increase will reduce total revenue. Indeed, original revenue: $800. New revenue: $700. Marshall’s model predicted this loss perfectly.

Through his framework, Marshall categorized demand into three distinct states, which remain fundamental to economics curricula today: alfred marshall price elasticity of demand

= % change in quantity demanded / % change in price Demand is elastic (1

Marshall argued this is the most powerful determinant. The more substitutes a good has, the more elastic its demand. If the price of one brand of bottled water rises, consumers easily switch to another. If the price of insulin rises, diabetics have no substitute—hence, inelastic demand. New revenue: $700

This is false. Slope measures absolute changes (ΔQ/ΔP), while elasticity measures percentage changes. A steep slope can be elastic or inelastic depending on your starting price point. Marshall was meticulous in using percentage changes to allow comparison across different goods and currencies.

Demand changes by exactly the same percentage as price. Total revenue remains constant.