A sports magazine wants to learn something about its subscribers. The subscribers are classified as teenagers or older people and as being in school or holding a job. The magazine sends out a questionnaire to its readers and obtains the following results:

40 % are older than 20.

60 % are teenagers.

40 % of the teenagers who subscribe are in school.

40 % of the subscribers hold a job.

What is the possibility that a subscriber is older than 20 and holds a job?