A survey was conducted among 40 pet owners to determine if they own a cat, a dog, or both. The results are summarized in the table below.
| Owns a Dog | Does not own a Dog | |
|---|---|---|
| Owns a Cat | 12 | 8 |
| Does not own a Cat | 15 | 5 |
If one of these pet owners is selected at random, what is the probability that the person owns a cat or owns a dog (or both)?
