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.
(i) Measurement of Elasticity on a Linear Demand Curve: The price elasticity of demand can also be measured at any point on the demand curve. If the demand curve is linear (straight line), it has a unitary elasticity at the mid point. The total revenue is maximum at this point.