Các câu hỏi tương tự
HS 5a, 5b,5c co tat ca 175 em sau khi cur 1/4 Hs lop 5a di don vuon ,1/3 hs lop5b trong cay va 2/7 hoc sinh lop 5c quet san truong thi so hoc sinh con lai cua 3 lop luc nay bang nhau.Hoi ban dau moi lop co bao nhieu hoc sinh
khoi lop 5 cua truong tan tien co 3 lop . so hs cua lop 5a bang 3/8 so hs cua khoi , so hs cua lop 5b bang 2/3 so hs cua loi 5a , lop 5c co 45 hs. khoi lop 5 cua truong tan tien co bao nhieu hoc sinh
lop 5a co so hs nu bang 2/3so hsnam .Neu 2 ban nu chuyen di va thay vao do la 2 ban nam thi so hs nu bang 4/7 hs nam .Tinh so hs lop 5a
lop 5B co so hs gioi nhieu hon 1/5 so hs cua lop la 3 em. So hs con lai nhieu hon 1/2 so hs cua lop la 9 em. Tinh
a) So hs gioi lop 5B.
b) So hs lop 5B
lop 5 a it hon lop 5b 4 em 1/5 hs 5 a nhieu hon 1 /7 so hs 5b hoi moi lop co bao nhieu em ghi ro loi giai
3) Tim so tu nhien lon nhat de thay vao y thi duoc:
5,13+y < 17,2 + 5,13
4) Lop 5A co 30 HS ,moi HS mua 4 quyen vo. Lop 5B co 32 HS, moi HS mua 3 quyen vo. Lop 5C mua so vo bang TBC so vo cua 2 lop da mua> Hoi lop 5C co bao nhieu quyen vo?
5) 1 phong hoc dang HHCN co CD 8m, CR 6m, CCao 4,5m. Tinh sien tich quet voi 4 buc tuong va tran nha biet rang sien tich cac cua la 14m2
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Cam on moi nguoi!
lop 5a co so hoc sinh gioi =0,75 so hs kha sau do co hs gioi lop 5b chuyen sang nen so hs gioi=0,8 so hs kha tinh so hs kha luc dau cua lop 5a
Mot lop hoc co 1/3 so hs nam bang 1/5 so hs nu.So hs nam it hon so hs nu 12 ban,tinh so hs nam va so hs nu cua lop do
1 lop co 25% hs gioi , 55% hs kha con lai la hs trung binh . Tinh so hoc sinh cua lop do bt so hs trung binh la 5 bn