Question

An animal shelter has 9/10 of its crates filled with animals.
12 of the filled crates are holding dogs.

What fraction of the total number of crates are holding dogs?
i think it is 10/12

Answer 1

and why do you think this?
It is impossible to say, given the data provided.
If there are x crates in total, then 12/x hold dogs, regardless of what fraction are filled with some kind of animal.

I suspect that you garbled the question.

Answer 2

Im sorry i think i left out something thanks for pointing it out