Can you please assist me in determining the average flow time of a job exiting this system? If I understand the question correctly this needs to be the weighted average.

Be sure to show I,R and T for each activity. Sta B 2.4 R= 40% R= I= R= T= 1 2.4 0.42 24 2.4 10 40% 0.96 Start 5 Sta A 50% 1.44 60% R= 3 R= Exit I- R= T= 2 6 0.33 18 6 per min 3 min Sta C R= Total output R 6.00 80% 3.552 I= 3 4.44 0.68 13.32 4.44 R= T= 10% 3 R= 100% R= 0.89 20% 0.6 R= 1.49 Sta D I= R= T= 1 1.49 0.67 8.93 1.49 6.00 Be sure to show I,R and T for each activity. Sta B 2.4 R= 40% R= I= R= T= 1 2.4 0.42 24 2.4 10 40% 0.96 Start 5 Sta A 50% 1.44 60% R= 3 R= Exit I- R= T= 2 6 0.33 18 6 per min 3 min Sta C R= Total output R 6.00 80% 3.552 I= 3 4.44 0.68 13.32 4.44 R= T= 10% 3 R= 100% R= 0.89 20% 0.6 R= 1.49 Sta D I= R= T= 1 1.49 0.67 8.93 1.49 6.00