There are 120 chickens and 120 rabbits. Chickens have 120 more feet than rabbits. How many chickens and rabbits are there?

If the equation is very simple, the following is the arithmetic solution:
There are 120 chickens and rabbits in total. The 120 feet of chickens are more than that of rabbits, corresponding to 60 chickens. The remaining 120-60 = 60 animals have the same feet of chickens and rabbits
One rabbit has four feet and one chicken has two feet, which means that the number of chickens in the remaining 60 animals is twice that of rabbits, 60 / 3 = 20, which is the number of rabbits, with a total of 80 feet. The total number of chickens is 40 + 60 = 100, with a total of 200 feet

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