The table shows the distribution of types of trees in a park by height and species.
| Oak | Maple | Pine | Total | |
|---|---|---|---|---|
| Short | 15 | 25 | 10 | 50 |
| Medium | 10 | 5 | 35 | 50 |
| Total | 25 | 30 | 45 | 100 |
If a tree is selected at random from the park, what is the probability of selecting a maple tree? (Express your answer as a decimal or fraction, not as a percent.)
