问一道题：NO.PZ2018062003000089

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？

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% 为何这里的200和400是名义G呢？没有说考虑到通胀率了呀

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% 請問爲何不是（170/120）-1? 最後也≈41%，謝謝

NO.PZ2018062003000089 用（170-120）/120再减1得出来的数不就是增长率嘛？

NO.PZ2018062003000089 41%. 52%. B is correct. ReG in the yebefore last was: $200/1.2= $167 ReG 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%这里的200和400是指名义g吗？看题目没太懂这两个数是什么意思。