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IB Economics Unit 2.3: Microeconomics - Elasticities (id: 3829de69d)

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admin 发表于 2024-4-8 18:10:56 | 显示全部楼层 |阅读模式
本题目来源于试卷: IB Economics Unit 2.3: Microeconomics - Elasticities,类别为 IB经济学

[单选题]
In the market for a good.0 .bexh1c vb2g0jg rs, assume the income of cons48*lmib9 rj dkumers increases by 10% and qua rk8jb*l49mdintity demanded of the good increases by 5%. Calculate the income elasticity of demand (YED), and state the type of good it is.

A. YED is 0.5,Type of good is Luxury
B. YED is 0.5,Type of good is Necessity
C. YED is 2,Type of good is Normal
D. YED is 2,Type of good is Inferior


参考答案:  B


本题详细解析:
YED is correctly calculated as 0.5-j9svl *mv*hq p1(m:xb dn x:v: income elasticity of demand= $\frac{5%}{10%}$ ​Positive YED values that are less than 1 mean that the good is income inelastic, or a necessity good. Choice A incorrectly identifies the product as an income elastic or luxury good (YED > 1). Choices C and D invert the formula for YED. Additionally, a good is inferior only if its YED is negative.

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