Total Animals = 11
Total legs = 38
Assumed all the animals are chicken:
11 x 2 = 22 legs
Difference in legs:
38 - 22 = 16
The difference in legs between rabbits and chicken:
4 - 2 = 2
Number of rabbits = 16 ÷ 2 = 8
Number of chicken = 11 - 8 = 3
Answer: There are 8 rabbits and 3 chickens.
Check:
(8 x 4) + (3 x 2) = 38 legs