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13问答网 > 有一群鹅，狗，数头共三百六，腿共八百九，有多少只鹅，多少只狗

有一群鹅，狗，数头共三百六，腿共八百九，有多少只鹅，多少只狗

2025-03-15 07:09:38

推荐回答（3个）

回答1：

鸡兔同笼，设鹅x，则狗360-x,{2*x+4*(360-x)=890}解得x=275
鹅有275只，狗有85只

回答2：

都为鹅，腿有360×2=720，少890-720=170，狗有170÷(4-2)=85(只)，鹅有360-85=275(只)。

回答3：

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