nguoi ta dung dau an vao cac can . can a dung 20 lit, can b dung 15 lit can c dung 9 lit .can d la loai can 10 lit rong .neu do dau an tu can a b c vao day can d thi dau an con lai o cac can a b  c tat ca la bao nhieu 

co 30 cai can moi can dung 5 lit dau . hoi neu so lit dau do ro day vao cac can loai 3 lit thi can tat ca bao nhieu cai can loai 3 lit ?

Co hai cai can , 1 cai loai 20 lit , 1cai loai 10 lit trong mi can dung 1 luong dau .Neu do tu can 20 lit sang can 10 lit cho day , thi can 20 lit chi het 1/8 so dau luc dau dung trong can 20 lit . Neu do dau tu can 10lit sang can 20lit cho day thi trong can nho con lai 4lit dau . Hoi luc dau moi can dung bao nhieu lit?

xin loi vi ko the danh dau thanh

co mot so dau, neu me dung vao cac can 3 lit thi duôc can va con thua 2 lit. neu so dau do me dung vao cac can 5lit thi phai dung het bao nhieu con?

Mot cua hang co mot so lit nuoc mam dung day trong cac thung, moi thung chau 20 lit. Neu do so nuoc mam do vao cac can moi can 5 lit thi so can 5 lit nhieu hon so thung 20 lit la 3 cai . Hoi cua hang co tat ca bao nhieu lit nuoc mam?

nguoi ta do day dau vao cac can loai 1,loai 2va loai 3 thi thay tong so dau trong cac can cua moi loai deu bang nhau.Hoi can loai 1 nhieu hon can loai 3 bao nhieu cai.Biet rang,so dau o 1 can loai 1 bang 2/3 so dau o mot can loai 2 va bang 2/3 so dau o mot can loai 3 va tong so can cua 3 loai la 62 cai.

Dem so dau day trong mot so can 10 lit rot day vao cac can nho 2 lit thi so can 10 lit it hon so can 2 lit la 12 can.Hoi xo tat ca bao nhieu lit dau

nguoi ta dong het so dau vao cac can gom loai can mau xanh va loai can mau do . tinh ra duoc tat ca 60 can . hoi co bao nhieu can mau do biet rang cu dong dau duoc 2 can mau do thi dong duoc 3 can mau xanh

mot nguoi dem sua dung day trong mot so can 10 lit.Sau do rot day vao cac can 2 lit tjiso can 10 lit it hon so can 2 lit la 12can.Hoi tat ca co bao nhieu lit sua ?