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minhkhue27082001
2 năm trước
lớp 6b có 50 học sinh gồm 3 loại:Giỏi ,khá,trung bình.Số học sinh khá bằng 54% số học sinh cả lớp.Số học sinh trung bình bằng 5/9 số học sinh khá.Còn lại là học sinh giỏi.a)Tính số học sinh mỗi loại của lớp 6b.b)tính tỉ số phần trăm số học sinh giỏi so với học sinh cả lớp.
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