The number of chickens is 20% less than that of ducks, and how many percent more than that of chickens?

The number of chickens is 20% less than that of ducks, and how many percent more than that of chickens?


The number of ducks is 25% more than that of chickens



Aunt Wang raised many chickens and rabbits. It is known that there are 13 more chickens and 16 more feet than rabbits. How many chickens and rabbits are there?


Suppose there are x rabbits, then there are (x + 13) chickens, (x + 13) × 2-4x = 16 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 2x = 10 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp