Problem: A production line consists of two workstations. The first workstation takes 30 minutes to process a part whereas the second workstation takes 20 minutes to process a part. The output of workstation 1 goes to a second production line and to workstation 2, in the proportions of 20% and 80%. If one part arrives at workstation 1 every 10 minutes what is the effective utilization of workstation 2?