A firm classifies its customers in two ways according to: /  ‘n Firma klassifiseer klante op twee maniere, volgens: 

(I) whether the account is overdue and / of die rekening agterstallig is en  

(II) whether the account is new (less than twelve months) or old. / of die rekening nuut is (minder as twaalf maande) of oud. 

An analysis of the firm’s records provides the following table of joint probabilities: /  ‘n Analise van die firma se rekords verskaf ons van die volgende tabel van gesamentlike waarskynlikhede: 

One account is randomly selected. / Een rekening word ewekansig geselekteer. 

If the account is overdue, what is the probability that it is new? /  Indien die rekening agterstallig is, wat is die waarskynlikheid dat dit ‘n nuwe rekening is?