| Age Category | Live east of the river | Live west of the river | Total |
|---|---|---|---|
| Less than 40 years old | 17 | 11 | 28 |
| At least 40 years old | 18 | 89 | 107 |
| Total | 35 | 100 | 135 |
The table summarizes members of a local organization by age and whether they live east or west of the river. If a member of the organization is selected at random, what is the probability that the selected member is at least 40 years old?
