Answer:
the neighbor has in total 24 chickens.
Step-by-step explanation:
Total number of animals = 31
Let the number of roosters = k
Then , the number of chickens he has = 2 k + 10
Now, according to the question:
(k) + ( 2k + 10) = 31
or, 3k = 31 -10
⇒ 3k = 21, or k = 21/3
⇒ k = 7
Hence, the number of roosters he has = k = 7
And the number of chicken he has 2k + 10.
= (2 x 7) + 10
= 24
Hence, the neighbor has total 24 chickens.
