学校:
教师:
科目:
题目:
The price of a plane ride rises by 10 percent.
The price elasticity of demand for plane rides is 0.7 and
the price elasticity of demand for train rides is 0.1.
The cross elasticity of demand for train rides with respect to
the price of a plane ride is 0.6
1.calculate the percentage changes in the quantity demanded of plane ride and
train rides.
2.given the rise in the price of a plane ride, what percentage change in the
price of a train ride will leave the quantity demanded of train rides unchanged?
我的想法:
plane Ed=0.7
train Ed=0.1
交叉弹性=0.6
求需求量变动多少?
x/10%=0.6 x=6%
第一题我是这样想，但还是觉得好怪
第二题的话还请麻烦大家帮我想一下好吗 谢谢 想了一天还是没结果QQ