So tien Lan gop vao la 1-(1/4+3/10)=9/20 (so tien)
3000 dong tuong ung voi so tien la 9/20-3/10=3/20
So tien mua bong la 3000:3.20=20000 (dong)
ba bạn tâm mai va lan cung gop tien mua mot qua bong ban tam gop 1/4 sp tien ban mai gop 3/10 so tien ban lan gop nhieu hon ban mai la 3000 dong tinh gia tien mua cua qua bong do
3 ban:Tam ,Mai va Lan cung gop tien mua 1 qua bong.Ban Tam gop 1\4 so tien,ban Mai gop 3\10 so tien ban Lan gop nhieu hon Mai la 3000 dong. Tinh gia tien qua bong
Ba ban Tam , Mai va Lan cung gop so tien mua mot qua bong . Tam gop 1/4 so tien , Mai gop 3/10 so tien , Lan gop hon Mai 3000 . Tinh so tien qua bong
ba ban tam,mai,lan cung gop tien mua qua bong.tam gop 1/4 so tien,ban mai gop 3/10 so tien,ban lan gop hon ban mai 3000d.tinh gia tien mua qua bong do.
4ban hoa,hong,lan,hai cung gop tien mua bong so tien hoa gop=1\2so tien 3 ban kia gop so tien hong gop=1\3 so tien3 ban kia gop so tien lan gop =so tien 3 ban kia gop hai gop 13000dong tinh tien qua bong
Ba ban gop tien mua mot qua bong . Anh gop 1/4 so tien . Binh gop 3/10 so tien . Dung gop nhieu hon binh 3000 dong . Tinh so tien cua moi nguoi da gop
ba ban An,Binh,Cuong gop tien mua mot qua bong . An gop 1/4 so tien,Binh gop nhieu hon An 1/12 so tien. tinh ra An gop it hon Cuong 10 000 dong . hoi qua bong do co gia bao nhieu tien va moi ban gop bao nhieu tien ?
Bon ban chung tien mua mot qua bong. Hai gop mot nua so tien mua bong. So tien cua Binh gop ban 1/3 toan bo so tien gop cua cac ban khac. So tien cua Giang gop bang 1/4 so tien cua cac ban khac. Duong gop 2500 dong thi vua du so tien mua bong . Hoi bon ban da mua qua bong bao nhieu dong ?
3 ban chung tien mua mot qua bong xuan gop 1/3 tong so tien dinh gop it hon 3/5 so tien dinh va hợi gop la 2 nghin dong hoi gop 14 nghin dong hợi qua bong bao nhieu tien
