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2 năm trước
Tìm diện tích hình tam giác vuông biết tỉ số giữa 2 cạnh góc vuông là 2 : 5 và chúng kém nhau 12 cm . Theo hợp đồng , 2 tổ sản xuất chia lãi với nhau theo tỉ lệ 3 : 5 . Hỏi mỗi tổ được chia bao nhiêu nếu tổng số lãi là 12.800.000 đồng ?
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