老师用24元钱买了6瓶墨水,小兰买一瓶墨水用了5元钱。谁买的墨水便宜?每瓶便宜多少元钱?.M9\0x4S4f7b7T)i
算式:提示)U6]4a,?2b/^3C7f0B+[)C0J;A3z.M9\0x4S4f7b7T)i
答:2[(J:r'X4V;w0Q(q(E(O买的墨水便宜,每瓶便宜*p3\:r*s元钱。.M9\0x4S4f7b7T)i