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Loga14042000
2 năm trước
1.trong 2 thùng A và B có tất cả 250 lít dầu. Nếu chuyển 36 lít dầu từ thùng A sang thùng B thì hai thùng có số dầu bằng nhau. Tính số dầu bằng nhau. Tính số dầu ban đầu của mỗi thùng. 2.Một lớp học có số học sinh nam bằng 3/4 số học sinh nữ và ít hơn số học sinh nữ là 4 em. Tìm số học sinh của lớp đó.
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