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Bulls317
2 năm trước
Bài 4: Ba đơn vị kinh doanh góp vốn theo tỉ lệ 3; 5; 7. Hỏi mỗi đơn vị sau một năm được chia bao nhiêu tiền lãi? Biết tổng số tiền lãi sau một năm là 225 triệu đồng và tiền lãi được chia tỉ lệ thuận với số vốn đã góp. Bài 5: Tính độ dài các cạnh của tam giác ABC, biết rằng các cạnh tỉ lệ với 4:5:6 và chu vi của tam giác ABC là 30cm
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