Co hai hop keo , hop thu 1 co 12 cai keo , neu hop thu 2 co them 20 cai keo nua thi hop thu 2 se co gap 3 lan hop thu nhat .Hoi luc dau hop thu 2 hon hop thu 1 bao nhieu cai keo ?
ha co 45 cai keo cao su,ha cho lan 6 cai keo,cho minh 12cai keo.hoi con lai bao nhieu cai keo?
an co 56 cai keo chia het cho tung va lam .moi lan an chia cho tung 3 cai keo lai chia cho lam 4 cai keo .hoi tung va lam moi ban duoc chia bao nhieu cai keo?
co 5 hop keodung so keo bang nhau .
neu lay ra moi hop 24cai thi so keo con lai trong cac hop bang so keo co trong 3 hop luc dau .Hoi moi hop luc dau co bao nhieu cai keo?
Lan co 39 cai keo va it hon Hoa 18 cai keo.Hoi ca hai ban co bao nhieu cai keo?
CO 7 HOP KEO DUNG SO KEO BANG NHAU NEU LAY RA 95 VIEN KEO THI CON LAI 2 HOP KEO NGUUYEN HOI 7 HOP KEO CHUA TAT CA BAO NHIEU VIEN KEO
nam co 67 cai keo , hon 2 lan tuananh .hoi ca 2 ban co bao nhieu cai keo
Co 1356 cai keo chia deu vao 2 hop .Hoi 5 hop nhu the thi dung duoc bao nhieu cai keo ?
bo co 5 cai keo con co 8 cai keo me co 6 cai keo biet tong so keo cua ca gia dinh bang 1/3 so keo cua nguoi ban keo va nguoi ban keo co so keo bang 2/3 so keo cua nguoi ban keo truoc hoi nguoi ban keo truoc co bao nhieu cai keo