Answer:
15 animals
Explanation:
If for every 4 cats she has 1 dog then you would just do 12 divided by 4 which would give you 3 (that's how many dogs she took care of) you would then just have to add 12 and 3 to get 15.
3 dogs per 12 cats
4 cats :1 dog
4x3=12
1x3=3
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