鸡与兔共有100只。鸡的脚比兔的脚

鸡与兔共有100只。鸡的脚比兔的脚多80只。问鸡与兔各多少只？5P,b2~/l5A'f;X'v:r,`'j

算式：提示5]3w8i6X,m5P,b2~/l5A'f;X'v:r,`'j

答：鸡有'r;_2p)h;}-I)K7h只，兔6a5H/M,t-V8t9z)S1j只。5P,b2~/l5A'f;X'v:r,`'j