Answer:
9/25
Explanation:
If 3 have neither cats or dogs, then you can subtract 3 from 25, which is equal to 22.
Next, you can also subtract 15 from 22. What do you get? 7.
Now, subtract 7 from 16 to find how many people in the class have both cats and dogs. The answer is 9. That is the numerator.
Finally, put 25 under 9, since that is the total number of people.
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