| Commute Time | Car | Public Transport | Total |
|---|---|---|---|
| Less than 30 min | 70 | 30 | 100 |
| 30 min or more | 50 | 80 | 130 |
| Total | 120 | 110 | 230 |
The table above summarizes survey data from commuters regarding their primary mode of transport and their daily commute time. Which of the following expressions represents the probability that a randomly selected commuter takes public transport, given that their commute time is 30 minutes or more?