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Pertanyaan
A study group consisting of 10 people forms two different groups whose members are equally numerous. The average weight of the first group was 45,8 kg and the avarage of the second gruop was 47,6 kg. Because she wanted the average body weight of the two groups to be the same, Ani in the first group and Anton in the second group exchanged groups and the average body weight became the same. What is the weight difference between Ani and Anton?
9 kg
6,3 kg
5,2 kg
4,5 kg
1,8 kg
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N. Puspita
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