Data collected from Cape Town shows that 60% of drivers are above 30 years old. 5% of

Question:

Data collected from Cape Town shows that 60% of drivers are above 30 years old. 5% of all the drivers over 30 will be prosecuted for a driving offence during a year, compared with 10% of drivers aged 30 or younger. If a driver has been prosecuted, what is the probability they are 30 or younger?