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PaisleyPPx · 2020年05月02日

问一道题：NO.PZ2018062003000089

  1. CFA I
  2. Economics Analysis

问题如下：

Last year, the annual value of final goods and services of country. A increased from $200 billion to $400 billion, the GDP deflator increased from 120 to 170. In this condition, the real GDP of country A increased by:

选项：

A.

35%.

B.

41%.

C.

52%.

解释：

B is correct.

Real GDP in the year before last was: $200/1.2= $167

Real GDP in the last year was: $400/1.7= $235

($235- $167)/$167=41%

考点： GDP deflator

解析：运用 GDP deflator 反解出一年前后的真实GDP数值，

一年前：$200/1.2= $167

一年后：$400/1.7= $235

在进一步求得真实GDP的增长率，($235- $167)/$167=41%

老师，请问能不能直接用（170-120）/120？

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1 个答案

丹丹_品职答疑助手 · 2020年05月06日

嗨，爱思考的PZer你好：


同学你好，The GDP deflator equals the ratio of nominal GDP to real GDP，可以被理解为通货膨胀系数，而不是题干要求的the real GDP of country A increased ，真实GDP的增长程度，请知悉。


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NO.PZ2018062003000089 问题如下 Last year, the annuvalue of fingoo anservices of country. A increasefrom $200 billion to $400 billion, the G flator increasefrom 120 to 170. In this contion, the reG of country A increaseby: A.35%. B.41%. C.52%. B is correct.ReG in the yebefore last was: $200/1.2= $167ReG in the last yewas: $400/1.7= $235($235- $167)/$167=41%考点 G flator解析运用 G flator 反解出一年前后的真实G数值，一年前$200/1.2= $167一年后$400/1.7= $235在进一步求得真实G的增长率，($235- $167)/$167=41% 这个公式不是名义G/reGx100吗。为什么不能用增长的名义G/增长的reG 在乘以100=增长的50这个式子把reG反求出来增长了多少？

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