hai nguoi di mua hoa tet. tong so tien cua hai nguoi la 79000dong.khi nguoi thu1 mua het 5\6 so tien cua minh va nguoi thu 2 mua het 6\7 so tien cua minh thi nguoi thu 2 con nhieu hon nguoi thu 1 2000 dong .hoi a, moi nguoi mang bao nhieu tien.b, moi nguoi mua bao nhieu tien hoa