问题
单项选择题
If the price elasticity of demand for a good is 4.0, then a 10 percent increase in price would result in a:()
A. 4% decrease in the quantity demanded.
B. 10% decrease in the quantity demanded.
C. 40% decrease in the quantity demanded.
答案
参考答案：C
解析：
Price elasticity of demand=(% change in Q demanded/% change in price). Given the price elasticity of demand and the percentage change in price, we can solve for the percentage change in Q demanded.