问题标题：
一道GRE数学题,求详解Beforebeingsimplified,theinstructionsforcomputingincometaxinCountryRweretoadd2percentofone'sannualincometotheaverage(arithmeticmean)of100unitsofCountryR'scurrencyand1percentofone'sannua
问题描述：
一道GRE数学题,求详解
Beforebeingsimplified,theinstructionsforcomputingincometaxinCountryRweretoadd2percentofone'sannualincometotheaverage(arithmeticmean)of100unitsofCountryR'scurrencyand1percentofone'sannualincome.Whichofthefollowingrepresentsthesimplifiedformulaforcomputingtheincometax,inCountryR'scurrency,forapersoninthatcountrywhoseannualincomeisI
(A)50+I/200
(B)50+3I/100
(C)50+I/40
(D)100+I/50
(E)100+3I/100
沈学会回答：
我懂了,重新翻译：
简单翻译：国家R的ZF要加税,原来是100块和1%的个人收入的算数平均数,也就是加起来除以2,现在要再加上2%的个人收入.
原来是(100+I/100)/2=50+I/200,然后再加上(I/100)*2=I/50
所以加起来就是50+I/200+I/50=50+I/40
选C
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