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tai7979
2 năm trước
Hai kho có tất cả 780 tấn gạo. Sau khi kho A xuất đi 70 tấn gạo và kho B xuất đi 34 tấn gạo thì số gạo còn lại của kho A bằng 6/7 số gạo còn lại của kho B. Hỏi lúc đầu mỗi kho có bao nhiêu tấn gạo?
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