khi tra bai kiem tra mon toan ,co giao noi ;so diem 9 chiem 25% / so diem 10 nhieu hon so diem 9 la 6,25% , nhu vay co 18 ban duoc diem 10 hoac diem 9 ,  tat ca hoc sinh deu nop bai kiem tra . hoi lop do co bao nhieu hoc sinh?

Tra bai kiem tra mon toan cua lop 5A CO GIAO NOI:<So diem 10chiem 25%,so diem 9 hon so diem 10 la 6,25% nhu vay co 18 ban duoc diem 10 va diem 9 tat ca cac ban hoc sinh trong lop hoi co bao nhieu hoc sinh duoc diem 9 

trong dip kiem tra hoc ki 1 lop 5b co so diem mon toan nhu sau so diem 10 chiem 25 phan tram so diem chin nhieu hon so diem 10 6,25 phan tram nh vay co 18 ban duoc diem 10 hoan diem 9.Tinh so hoc sinh cua lop 5b

tr bai kiem tra lop 6a co giao noi :so diem muoi la 6anhu vay co 18 ban duoc diem 9 va 10 hoi lop 4a co bao nhieu hoc sinh (ca lop deu nop bai )

khi tra bai kiem tra cua lop 5a co giao noi : so diem 10 chiem 25%, SO diem 9 it hon so diem 10 la 5%biet rang co tat ca 18 ban diem 9 va 10 hoi lop 5a co bao nhieu hs

khi tra bai kiem tra lop 5a co giao noi so diem 10 chiem 25% ,so diem 9 chiem it hon so diem 10 la 5% .BIET  LOP 5A CO20 hoc sinh hoi lop 5a co bao nhieu ban dat diem 9, bao nhieu ban dat diem 10

trong 1 bai kiem tra , tat ca hoc sinh trong 1 lop deu duoc diem 9 hoac 10. Tong so diem ca lop la 336 diem. Tinh so hoc sinh duoc diem 9 ,so hoc sinh duoc diem 10

lop 5a co 43 hoc sinh . Trong mot bai kiem tra ca lop deu dat 9 hoac 10 .Tong so diem cua ca lop la 406 diem . Hoi co bao nhieu ban dat diem 9 bao nhieu ban dat 10

giup mik voi

Mot lop co 45 hoc sinh, trong 1 bai kiem tra tat ca hoc sinh deu duoc diem 8 hoac diem 9. Tong so diem cua ca lop la 379 diem. Khi do so hoc sinh duoc diem 87 la? Cau nay o violympic nhe