The Great Upheaval. A Spontaneous Eruption. It started with a 10% pay cut. When leaders of the Baltimore and Ohio Railroad Company ordered this second reduction in less than eight months, railroad workers in Martinsburg, West Virginia decided they had had enough.
(1) The Percentage Method: The price elasticity of demand is measured by its coefficient E p. This coefficient E p measures the percentage change in the quantity of a commodity demanded resulting from a given percentage change in its price: Thus. Where q refers to quantity demanded, p to price and â to change. If E p p p = 1 demand is unitary elastic.
14 Answers. Price elasticity is a measure of the responsiveness of the quantity demanded to a change in price. It is calculated as the percentage change in quantity demanded to a percentage change in price . When quantity demanded is very responsive to a change in price we say demand is elastic; when quantity demanded is not very responsive to a change, we say that demand is inelastic.