There are 100 chickens and rabbits. There are 80 more chicken feet than rabbit feet. How many chickens and rabbits are there? (use the equation of primary school to solve)

There are 100 chickens and rabbits. There are 80 more chicken feet than rabbit feet. How many chickens and rabbits are there? (use the equation of primary school to solve)

If there are x chickens, then there are (100-x) rabbits, X chickens have 2x feet, and (100-x) rabbits have 4 × (100-x) feet,
2X-4(100-X)=80
2X-400+4X=80
6X-400=80
6X=400+80
6X=480
X=480÷6
X=80
100-X=100-80=20
A: there are 80 chickens and 20 rabbits

There are 262 feet in the same cage. There are 20 less rabbits than chickens. How many chickens and rabbits are there?

There are 262 + 4x & nbsp; & nbsp; & nbsp; + 20 rabbits

There are 200 chickens and rabbits in total. There are 56 chicken feet less than rabbit feet. There are several chickens and rabbits in each group,

There are x chickens and 200-x rabbits
4*(200-X)-2X=56
800-4X-2X=56
6X=744
X=124
200-124=76
A: there are 124 chickens and 76 rabbits