co hai thung dug dau . nguoi ta lay ra 15 lit dau tu thung thu nhat thi so dau con lai bang 1/3 so dau trong thung thu hai .tiep tuc lay ra o thung thu hai 5 lit dau thi trong thung con lai 31 lit . tinh so dau chua trong moi thung .
co 2 thung dau thung thu nhat sau khi lay ra 25lit thi
con lai bang 1 phan 2 sau thung 2 khi lay 8lit thi con 40 lit
tinh so dau ca 2 thung ?
co 2 thung dau.Sau khi ban 2/5so dau thung thu nhat va 4/9 so dau thung thu hai thi tong so dau hai thung con lai la 120l, trong do so dau con lai o thng thu nhat =3/5so dau con lai o thung thu hai.Hoi luc dau moi thung co bao nhieu lit dau
hung thu nhat co so dau gap doi thung thu hai.neu lay di 25 l dau o thung thu nhat va 6 l dau o thung thu hai thi thung thu nhat hon thung thu hai 57 l dau
Hai thung co chua 730 l dau . Sau khi ban 30/ o thung thu nhat thi ti so dau cua thung thu nhat va thung thu hai la 3/7 . Tinh so dau o moi thung luc dau
lay 1/7 thung dau thu nhat va 1/8 thung dau thu 2 thi duoc 12l. biet thung thu 1 co 42 l hoi thung thu hai co bao nhieu l
thung nhat it hon thung thu hai la 27 lit dau neu lai o thung thu nhat ra 15 lit thi so dau o thung thu nhat bang 4 7 so dau o thung thu hai hoi moi thung co mao nhieu lit dau
hai thung dau chua nuoc tat ca 211 lit , sau khi lay ra moi thung mot so lit dau bang nhau thi thung 1 con 85 lit , thung 2 con 46 lit . tinh so dau co o moi thung
hai thung dung365 l dau neu rot them vao thung thu nhat 40 l dau va giu nguyen so dau o thung thu hai thi thi thung thu hai kem thung thu nhat 24l dau hoi luc dau moi thung co bao nhieu l dau