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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Math Problem (Level 1) : Another 100m dash (D20)
Taro runs 60 m in 8.4 seconds and Jiro runs 60 m in 9.6 seconds.
They started at the same time at 100 m race.
When Taro makes a goal, find the distance to the goal for Jiro.