When the local used bookstore prices economics books at 15 yuan each, it generally sells 70 books per month. If it lowers the price to 7 yuan, sales increase to 90 books per month. Given this information, we know that the price elasticity of demand for economics books is about
A、2.91, and an increase in price from
15 results in an increase in total revenue.
B、2.91, and an increase in price from15 results in a decrease in total revenue.
C、0.34, and an increase in price from15 results in an increase in total revenue.
D、0.34, and an increase in price from15 results in a decrease in total revenue.
A、2.91, and an increase in price from
B、2.91, and an increase in price from
C、0.34, and an increase in price from
D、0.34, and an increase in price from
微观经济学（全英）
章节列表
1. General Overview of Economics282. Principles of Economics353. Circular-Flow Diagram and PPF204. Interdependence and Trade205. Demand and Supply756. Elasticity717. Price Control and Taxation408. CS, PS and the Efficiency of Markets109. Costs of Taxation2510. International Trade3011. Externalities3112. Public Goods and Common Resources2013. The Costs of Production20