A local pet store surveyed dog owners and cat owners about their pet's favorite type of toy. The number of dog owners surveyed was twice the number of cat owners surveyed. The table below shows the distribution of preferred toy types, in percent, for each owner group.
| Dog Owners | Cat Owners | |
|---|---|---|
| Squeaky Toy | 15% | 25% |
| Chew Toy | 50% | 30% |
| Plush Toy | 20% | 35% |
| Ball | 15% | 10% |
| Total | 100% | 100% |
If a person whose pet preferred a Squeaky Toy is selected at random, what is the probability that the person is a dog owner?