This is Anita's work center. Five jobs are waiting for processing through two work centers. Their processing time (in minutes) at each work center is contained in the table below. Each job requires work center Cici before work center Caca. Use Johnson's rule to sequence these five jobs for minimum total duration. Show your work in determining the job sequence and after how many hours will all jobs be completed? Job Cici Caca RST > > 20 10 25 35 50 20 U 26 26 55 75 Umi wants to build her one centrally located processing facility to serve the four recycling drop-off locations. The four drop-offs have characteristics as given in the table below. What is the approximate center of gravity of these four locations? Location Drop-off point A X-coordinate Y-coordinate Tonnage 1 8 10 Drop-off point B 6 7 35 Drop-off point C 6 2 25 Drop-off point D 4 7 30