GMATPrep中的一道数学题,没看懂,
Beforebeingsimplified,theinstructionsforcomputingincometaxinCountryRweretoadd2percentofone'sannualincometotheaverage(arithmeticmean)of100unitsofCountryR'scurrencyand1percentofone'sannualincome.Whickofthefollowingrepresentsthesimplifiedformulaforcomputingtheincometax,inCountryR'scurrency,forapersoninthatcountrywhoseannualincomeis
50+I/40.题目也看不懂.
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