A company has tool cribs where workmen draw parts.  Two men have applied for the position of distributing parts to the workmen.  George Fuller is fresh out of trade school and expects a $6 per hour salary.  His average service time is 4 minutes.  John Cox is a veteran who expects $12 per hour.  His average service time is 2 minutes.  A workman's time is figured at $10 per hour.  Workmen arrive to draw parts at an average rate of 12 per hour.

(5 What is the average waiting time a workman would spend in the system under each applicant?

(5 Which applicant should be hired?