犀牛,羚羊,孔雀三种动物共有头26个,脚80只,几脚20只.已知犀牛有四只脚1只犄角,羚羊有4支脚2只犄角,孔雀有2支脚,犀牛,羚羊,孔雀各多少只
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/19 09:30:20
犀牛,羚羊,孔雀三种动物共有头26个,脚80只,几脚20只.已知犀牛有四只脚1只犄角,羚羊有4支脚2只犄角,孔雀有2支脚,犀牛,羚羊,孔雀各多少只
犀牛,羚羊,孔雀三种动物共有头26个,脚80只,几脚20只.已知犀牛有四只脚1只犄角,羚羊有4支脚2只犄角,
孔雀有2支脚,犀牛,羚羊,孔雀各多少只
犀牛,羚羊,孔雀三种动物共有头26个,脚80只,几脚20只.已知犀牛有四只脚1只犄角,羚羊有4支脚2只犄角,孔雀有2支脚,犀牛,羚羊,孔雀各多少只
题目错了,解出来不是整数.
犀牛x,羚羊y,孔雀z
x+y+z=26
4x+4y+2z=80
x+2y=20
若脚88(是不是看错了)
则解得:
犀牛x=16
羚羊y=2
孔雀z=8
10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
全部展开
100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000等 回答玩币
收起
设犀牛和羚羊为一组,都有4只脚(不管犄角)
则孔雀有(26*4-80)\(4-2)=12(只)
犀牛与羚羊共有26-12=14(只)
犀牛:(14*2-20)\(2-1)=8(只)
羚羊:14-8=6(只)
3