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tranthuhuong100604
2 năm trước
một cửa hàng có 500 kg gạo .Buổi sáng bán được 45% số gạo đó .Buổi chiều bán được 80% số gạo còn lại.Hỏi cả 2 lần cửa hàng bán được bao nhiêu kg gạo?
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