This site introduces problems of Sansue, i.e. mathematics which Japanese schoolchildren learn at elementary school. Problems are selected mainly from entrance examinations of famous junior high schools for 6th grade Japanese schoolchildren (12 years old) to take. We found Sansue is not only one of subjects at school but one of Japanese culture. Please enjoy Japanese Sansue culture.
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C.23 Sales change in three months
The sales in June of a certain store decreased by 15% compared with May.
The sales in July of the store increased 12% compared with June.
What percentage of reduction do the sales in July become compared with May?