An animal shelter has cats and dogs available for adoption in a ratio of 3:5. If there are 25 dog’s available how many cats are there?
Let's assume the number of cats available for adoption is 3x.
The ratio of cats to dogs available for adoption is given as 3:5.
Since there are 25 dogs available, we can represent this ratio as 3x:25.
Therefore, we can express the ratio 3x:25 as 3/5 = 3x/25.
Cross-multiplying, we get 5 * 3x = 3 * 25.
15x = 75.
Dividing both sides by 15, we get x = 75/15 = 5.
So, the number of cats available for adoption is 3x = 3 * 5 = 15. Answer: \boxed{15}.