Expected tаsk time: ES = Eаrliest Stаrt = Max (EF оf all immediate predecessоrs) EF = Earliest Finish = ES + Activity time LF= Latest Finish = Min (LS оf all immediate following activities) LS = Latest Start = LF – Activity time Slack = LS – ES or Slack = LF – EF Using Table 4, type in the correct whole number for each task’s expected task time (te) earliest start time (ES) earliest finish time (EF) latest start time (LS) latest finish time (LF), and Type Yes or No in the space provided to indicate whether the task is a critical task. NOTE: If you are unable to select any of the cells toward the right-hand side of the PERT Table, please click on a cell within the same row on the left-hand side of the table and use the 'Tab' key to tab over to the cell you would like to edit. Table 4 PERT Problem Project Tasks: Times Are in Hours. Note: Immed Predec=immediate predecessors, a=optimistic, m=most likely, b=pessimistic, te=expected task, ES=earliest start, EF=earliest finish, LS=latest start, LF=latest finish task times. Task Immed Predec a m b te ES EF LS LF Slack Critical (whole #) (whole #) (whole #) (whole #) (whole #) (whole #) (Yes/No) A -- 2 7 12 [t1] [ES1] [EF1] [LS1] [LF1] [slack1] [critical1] B -- 6 9 12 [t2] [ES2] [EF2] [LS2] [LF2] [slack2] [critical2] C -- 7 9 17 [t3] [ES3] [EF3] [LS3] [LF3] [slack3] [critical3] D A, B, C 11 11 11 [t4] [ES4] [EF4] [LS4] [LF4] [slack4] [critical4]
Expected tаsk time: ES = Eаrliest Stаrt = Max (EF оf all immediate predecessоrs) EF = Earliest Finish = ES + Activity time LF= Latest Finish = Min (LS оf all immediate following activities) LS = Latest Start = LF – Activity time Slack = LS – ES or Slack = LF – EF Using Table 4, type in the correct whole number for each task’s expected task time (te) earliest start time (ES) earliest finish time (EF) latest start time (LS) latest finish time (LF), and Type Yes or No in the space provided to indicate whether the task is a critical task. NOTE: If you are unable to select any of the cells toward the right-hand side of the PERT Table, please click on a cell within the same row on the left-hand side of the table and use the 'Tab' key to tab over to the cell you would like to edit. Table 4 PERT Problem Project Tasks: Times Are in Hours. Note: Immed Predec=immediate predecessors, a=optimistic, m=most likely, b=pessimistic, te=expected task, ES=earliest start, EF=earliest finish, LS=latest start, LF=latest finish task times. Task Immed Predec a m b te ES EF LS LF Slack Critical (whole #) (whole #) (whole #) (whole #) (whole #) (whole #) (Yes/No) A -- 2 7 12 [t1] [ES1] [EF1] [LS1] [LF1] [slack1] [critical1] B -- 6 9 12 [t2] [ES2] [EF2] [LS2] [LF2] [slack2] [critical2] C -- 7 9 17 [t3] [ES3] [EF3] [LS3] [LF3] [slack3] [critical3] D A, B, C 11 11 11 [t4] [ES4] [EF4] [LS4] [LF4] [slack4] [critical4]
Expected tаsk time: ES = Eаrliest Stаrt = Max (EF оf all immediate predecessоrs) EF = Earliest Finish = ES + Activity time LF= Latest Finish = Min (LS оf all immediate following activities) LS = Latest Start = LF – Activity time Slack = LS – ES or Slack = LF – EF Using Table 4, type in the correct whole number for each task’s expected task time (te) earliest start time (ES) earliest finish time (EF) latest start time (LS) latest finish time (LF), and Type Yes or No in the space provided to indicate whether the task is a critical task. NOTE: If you are unable to select any of the cells toward the right-hand side of the PERT Table, please click on a cell within the same row on the left-hand side of the table and use the 'Tab' key to tab over to the cell you would like to edit. Table 4 PERT Problem Project Tasks: Times Are in Hours. Note: Immed Predec=immediate predecessors, a=optimistic, m=most likely, b=pessimistic, te=expected task, ES=earliest start, EF=earliest finish, LS=latest start, LF=latest finish task times. Task Immed Predec a m b te ES EF LS LF Slack Critical (whole #) (whole #) (whole #) (whole #) (whole #) (whole #) (Yes/No) A -- 2 7 12 [t1] [ES1] [EF1] [LS1] [LF1] [slack1] [critical1] B -- 6 9 12 [t2] [ES2] [EF2] [LS2] [LF2] [slack2] [critical2] C -- 7 9 17 [t3] [ES3] [EF3] [LS3] [LF3] [slack3] [critical3] D A, B, C 11 11 11 [t4] [ES4] [EF4] [LS4] [LF4] [slack4] [critical4]
Expected tаsk time: ES = Eаrliest Stаrt = Max (EF оf all immediate predecessоrs) EF = Earliest Finish = ES + Activity time LF= Latest Finish = Min (LS оf all immediate following activities) LS = Latest Start = LF – Activity time Slack = LS – ES or Slack = LF – EF Using Table 4, type in the correct whole number for each task’s expected task time (te) earliest start time (ES) earliest finish time (EF) latest start time (LS) latest finish time (LF), and Type Yes or No in the space provided to indicate whether the task is a critical task. NOTE: If you are unable to select any of the cells toward the right-hand side of the PERT Table, please click on a cell within the same row on the left-hand side of the table and use the 'Tab' key to tab over to the cell you would like to edit. Table 4 PERT Problem Project Tasks: Times Are in Hours. Note: Immed Predec=immediate predecessors, a=optimistic, m=most likely, b=pessimistic, te=expected task, ES=earliest start, EF=earliest finish, LS=latest start, LF=latest finish task times. Task Immed Predec a m b te ES EF LS LF Slack Critical (whole #) (whole #) (whole #) (whole #) (whole #) (whole #) (Yes/No) A -- 2 7 12 [t1] [ES1] [EF1] [LS1] [LF1] [slack1] [critical1] B -- 6 9 12 [t2] [ES2] [EF2] [LS2] [LF2] [slack2] [critical2] C -- 7 9 17 [t3] [ES3] [EF3] [LS3] [LF3] [slack3] [critical3] D A, B, C 11 11 11 [t4] [ES4] [EF4] [LS4] [LF4] [slack4] [critical4]
Expected tаsk time: ES = Eаrliest Stаrt = Max (EF оf all immediate predecessоrs) EF = Earliest Finish = ES + Activity time LF= Latest Finish = Min (LS оf all immediate following activities) LS = Latest Start = LF – Activity time Slack = LS – ES or Slack = LF – EF Using Table 4, type in the correct whole number for each task’s expected task time (te) earliest start time (ES) earliest finish time (EF) latest start time (LS) latest finish time (LF), and Type Yes or No in the space provided to indicate whether the task is a critical task. NOTE: If you are unable to select any of the cells toward the right-hand side of the PERT Table, please click on a cell within the same row on the left-hand side of the table and use the 'Tab' key to tab over to the cell you would like to edit. Table 4 PERT Problem Project Tasks: Times Are in Hours. Note: Immed Predec=immediate predecessors, a=optimistic, m=most likely, b=pessimistic, te=expected task, ES=earliest start, EF=earliest finish, LS=latest start, LF=latest finish task times. Task Immed Predec a m b te ES EF LS LF Slack Critical (whole #) (whole #) (whole #) (whole #) (whole #) (whole #) (Yes/No) A -- 2 7 12 [t1] [ES1] [EF1] [LS1] [LF1] [slack1] [critical1] B -- 6 9 12 [t2] [ES2] [EF2] [LS2] [LF2] [slack2] [critical2] C -- 7 9 17 [t3] [ES3] [EF3] [LS3] [LF3] [slack3] [critical3] D A, B, C 11 11 11 [t4] [ES4] [EF4] [LS4] [LF4] [slack4] [critical4]
Expected tаsk time: ES = Eаrliest Stаrt = Max (EF оf all immediate predecessоrs) EF = Earliest Finish = ES + Activity time LF= Latest Finish = Min (LS оf all immediate following activities) LS = Latest Start = LF – Activity time Slack = LS – ES or Slack = LF – EF Using Table 4, type in the correct whole number for each task’s expected task time (te) earliest start time (ES) earliest finish time (EF) latest start time (LS) latest finish time (LF), and Type Yes or No in the space provided to indicate whether the task is a critical task. NOTE: If you are unable to select any of the cells toward the right-hand side of the PERT Table, please click on a cell within the same row on the left-hand side of the table and use the 'Tab' key to tab over to the cell you would like to edit. Table 4 PERT Problem Project Tasks: Times Are in Hours. Note: Immed Predec=immediate predecessors, a=optimistic, m=most likely, b=pessimistic, te=expected task, ES=earliest start, EF=earliest finish, LS=latest start, LF=latest finish task times. Task Immed Predec a m b te ES EF LS LF Slack Critical (whole #) (whole #) (whole #) (whole #) (whole #) (whole #) (Yes/No) A -- 2 7 12 [t1] [ES1] [EF1] [LS1] [LF1] [slack1] [critical1] B -- 6 9 12 [t2] [ES2] [EF2] [LS2] [LF2] [slack2] [critical2] C -- 7 9 17 [t3] [ES3] [EF3] [LS3] [LF3] [slack3] [critical3] D A, B, C 11 11 11 [t4] [ES4] [EF4] [LS4] [LF4] [slack4] [critical4]
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