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OngThu
2 năm trước
An có số bi bằng5/4 số bi của Hải, số bi của Hải bằng2/3 số bi của Hà và số bi của Hà là 12 bi. a/ Tính số bi của An, Hà , Hải.(1,5 ) b/ Tính tổng số phần trăm số bi của Hải so với số bi của cả ba bạn An, Hải,Hà.
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