This video demonstrates how to construct a PERT/CPM AON (Activity-on-Node) network diagram for a project consisting of 8 activities and how to determine the. About you. You should have a shape something like the following figure. Transcribed image text: Draw the node network, perform the CPM calculations, mark the critical path, and complete the table below: Repeat exercise with an imposed finish date of 18 and. Compute the total duration and list all critical path(s). Holgura de la actividad B = LS – ES = 7 – 5 = 2 dias. Since the Duration of “D” is 3 days, so the Late Start (LS) will be 10/08. Backward pass for Late" times (LS;LF): In the LS column, the entry is = cell containing LF cell containing duration. The activities necessary for the completion of this project are listed in the following table: Activity Normal Time (days) Crash Time (days) Normal Cost Crash Cost Immediate Predecessors A 4 3 $2,000 $2,600 B 2 1 $2,200 $2,800 C 3 3 $500 $500 D 8 4 $2,300. The total project completion time and the critical path should also be determined. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Question: Please answer the following: Construct the Project Network for this project. The first day starts at 0. Time (weeks) Predecessors Activity A Activity Time (weeks) Predecessors 5 E 3 B B 4 F 5 B C 2 A G 9 C, E D 1 A H 6 D, F (a) Draw a network with t, ES, EF, LS, and. Given the following network, compute the early, late, and slack iime lor cáčh activity. What is the critical path of the project? 4. Activity E Activity E has one preceding activity, H. Forward Pass. critical path for the project. Then draw a time‐scaled network and under it a labor resource histogram for the ES. A future construction project has the following activity relationships and activity time estimates (in days): - Leave 2-decimal if not exact, do not round up, for example, 4. a) Determine the expected completion time and variance for each activity. constructing the AON with ES, EF, LS and LF for each task; determining, for each task, if it is on the critical path; printing such information and the critical path. Early Finish (EF) = ES + Activity Duration (D) – 1; Late Finish (LF) Project management formula for Late Finish (LF) if the convention that the project starts on day one is adopted. Late Finish (LF): The latest possible date that the task will be able to finish without affecting the overall project completion date. Its EF is 9 + 5 = 14. Your instructor will provide the answers. The forward pass helps us determine the earliest possible start and finish times for each activity, while the backward pass helps. The total project completion time and the critical path should also be determined. 33 10 Menghitung waktu proyek • Tahap I hitung ES dan EF (hitung maju), maksimum dari beberapa kegiatan • Tahap II hitung LS dan LF (hitung mundur), perhitungan dimulai dari kegiatan terakhir (EF=LF),menuju kegiatan pertama(ES=LS), minimum dari beberapa kegiatan. Expert Answer. |-mil r i pussidie patns are: -Path (1) =Start ACFH =0+5+7+4+8=24 WEEKS -Path. Problem: (No. Define Finland a Select two pouble Interview L. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. (100 points) a. Download Table | ACTIVITIES CODE WITH THEIR ES, EF, LS, LF AND SLACK from publication: Probabilistic Completion Time in Project Scheduling | There are two common used methods to. View the full answer. Exhibit 5. LS = 10 - 4 + 1 = 7. . Use the following format for Node Diagram (75 points) BUAH ES LS Activity Duration TE FF EF LF Security fence Set flagpole 2 Activity ES DUE IS EF EFTELFI Build Spread sand playground 10 Move In Lay out work Demo shed. 1. Here are the activity times: Time Activity (weeks) A 6 B 8 с 2 D 1. Question: • Create a table and calculate the ES, EF, LS, and LF times and the slack for each activity in the figure below. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. Expert Answer. 12. Market research has already indicated the volume expected and the size of sales force required. (Every box must be filled in so use O's if needed. 6. There are 2 steps to solve this one. Also answer the questions hereunder:Manpower Leveling: 1. LS = 14 - 2 + 1 = 13. S = LS – ES = LF – EF. Part 1: (See figure 2 – part 1 below). d g 3 c h 4 f. 0 (1 review) Get a hint. Its LS is the LF of activity A, which is 9. Answer to Solved For the following schedule, draw the node network,Calculate the ES, Ef, LS and LF times for each activity. . The total project completion time and the critical path should also be determined. Late Finish (LF): It is equal to the late start of the activity that follows. Here are the activity times: Immediate Predecessor(s) Time Activity (weeks) A 7 B 8 с 2 D 3 Time Activity (weeks) E 5 F 6 G 9 H 6 Immediate Predecessor(s) B B C, E DF A A Dave's. ) Identify the critical path Assume the first activity starts at day 0. Activities path A 1-2 B 1-3 с 2-4 D 3-4 aij 2 3 3 mij 4 16 7 6 bij 6 17 7 4 8 . The logarithmic equation is solved using the logarithmic function: x = log b b x. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Question: Draw the AOA network and identify the critical path. Right Click column's header and choose Custom Fields. Transcribed Image Text: Dave Fletcher was able to determine the activity times for constructing his laser scanning machine Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. Can the project be completed in 30 weeks? Assume that “Systems Analysis”. Total time available for the activity = LF - ES Total Float (TF) = Total Slack = LF – EF = LS – ES = LF – ES – d Another type of float often used in network analysis is the Free Float, which can be calculated as: Free Float = Es (of succeeding activity) – EF (of activity in question) Tips for calculation of ES,EF during forward pass. Then, fill in all calculated activity information onto the blank tabular form provided. 3. Nội dung 1. 5. Find v (t) for t>= 0. Dave's earliest start (ES) and earliest finish (EF. Its slack. #manpropolibatam Tedy dan Tiodora, mahasiswa Prodi Administrasi Bisnis Terapan, Politeknik Negeri Batam mempresentasikan penyelesaian kasus project time mana. Analysis 5 2 7-3 2-5 3. Determine The Critical PathHow to Calculate Total Float Total float is calculated using a network diagram. LS = 14 - 2 + 1 = 13. First, from the Gantt Chart view you need to add 4 custom columns for (ES, EF, LS, LF). Activity Total Float Free Float Duration EF LF ES LS. (c). 1. Subtracting the EF from the LF gives the same result. The total project completion time and the critical path should also be determined. Here are the activity times: Dave's earliest start (ES) and. First, from the Gantt Chart view you need to add 4 custom columns for (ES, EF, LS, LF). Early Start (ES): Earliest date the activity can start. 12) was able to determine the activity times for constructing his laser scanning machine. 1 Activity Immediate Predecessor(s) Time A -- 12 B A 20 C A 16 D B, Draw the network diagram corresponding to the following informaiton. Construct. Then, fill in all calculated activity information onto the blank tabular form provided. Find out the project completion time. c. c. The total project completion time and the critical path should also be determined. Use the given legend in constructing your network for CPM calculations. Identify the critical path. (c) Identify all paths. Based on PM PrepCast and Formula Study Guide, here are the fomulas: EF = ES + Dur - 1 ES = EF of prev (largest) + 1 LF = LS of succ (smallest) - 1 LS = LF - Dur + 1 Float = LS - ES = LF - EF However, it was mentioned that there are other calculation methods, which where the Start Day is Zero. The total project completion time and the critical path should also be determined. ES of first activity = 1. 3. 3. (enter as a probability and round your response to three decimal places). b) Determine the expected duration, variance and standard deviation for each activity. It looks like this: LF - EF = total float. d. 15 Dave Fletcher (see Problem 3. Also indicate the critical path on the network. Your instructor will provide the answers. The total project completion time and the critical path should also be determined. g I 2 e. 1. 6. LF (latest finish time): 6. E DF Dave's. Complete the ES, EF, LS, LF and slack times for each activity and answer the following question: What is the probability. (c). LS = LF – t. 15 Question Help Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. LF is the lowest LS value among immediate successors, and LS is LF - duration. B. Calculate the available float for each task 5. To calculate total float, subtract the task’s earliest finish (EF) date from its latest finish (LF) date. Activity. 4 C 5 B 1 B SS FF SS FF D 12 с С 4 E 8 D 3 SS FF D 2 2. What is the expected completion time for the project? 3. For the nish" node (if there is one) ES is =max(all EF entries)" This is also the max of all the entries in column G Finish time" is calculated as the max of entries in the EF column, unless there is a preset nish time. (10 Points) Given the AON network in Figure 2 (following page), determine the ES, EF, LS, LF, Total Float, and Free Float of each activity. critical activities are activities having TS = 0. Its LF is 9 + 5 = 14. Use the following legend for filling out the AON network: Duration ES LS Activity Total Float Free Float EF LF. LS. Question: 2. . Free float: This is the difference between the earliest finish time of a task and the earliest start time of the next task. The total project completion time and the critical path should also be determined. A) ANSWER: Activity D ES EF LS LF TS A 2 0 2 4 6 4 B 10 2 12 6 16 4 C 8 2 10 7 15 5 D 15 2 17 8 23 6 E 7 12 19. 4. When the switch is opened, find the time constant. Expert Answer. Calculate the expected activity duration ( te), variance for each activity, ES, EF, LS, and LF times and the slack for each activity. What is the expected completion time for the project? 3. Here are the activity times: Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s) A 7 − E 4 B B 6 − F 5 B C 4 A G 10 C, E D 2 A H 8 D , F. For each task build the relevant network diagram 2. 2. Please show the network diagram with all the ES, EF, LS, LF and Slack values on each activity. 11: ES and EF times. Dave's latest start (LS) and latest finish (LF) are. When the switch is closed, calculate the value of Vc. Total Float = LS – ES or LF – EF. a) What is the EF of the project using the forward pass calculation?C2 Use the network diagram to answer the questions below: 1. Early Finish (EF): Earliest date that the activity can finish. and slack for each activity. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. For the project depicted below, a) Compute the ES, EF, LS, and LF times for the network. Also, determine (show calculations) the independent float and interfering float for Activity K. Late Start. ES, EF, LS, LF, and TF for each activity. Here are the activity times: Dave's earliest start (ES) and earliest finish (EF) are: In the following table the activities with their precedence sequence and expected time (days) are. The total project completion time and the critical path should also be determined. Given the AON network in the Figure, determine the ES. Activity ty (days) Relationship Predecessor ES EF LS LF TF FF A 6 Finish-to. Both of these formulas produce the same result. LS. LF of node A is 11 - 1 = 10 and. Image transcriptions. Compute the ES and LS for all activities. Late Finish (LF): The latest possible date that the task will be able to finish without affecting the overall project completion date. (b). Activity Time ES EF LS LF Slack. 5. Here are the activity times: C, E. George Monohan was able to determine the activity times for constructing the weed—harvesting machine to he used on narrow rivers. 0E+18 fL. (AOA) and (AON) Network Construction and Critical Path Calculations (Using Four Methods) EXAMPLE: Construct the (AOA) and (AON) networks for the project whose activities, their durations and their precedence relationships are as given in the table, also find: i) [ES, EF, LS, LF, Slack] for all activities. Construct the project network, given the precedence information provided, and calculate the ES, EF, LS, and LF times and the slack associated with each activity, and determine the critical path. Question: Draw the following networks, assuming interruptible activities and perform the CPM calculations to complete the corresponding table. LS Duration LF. a) Draw the network diagram based on the information given below. Explain what it means if an activity has a slack of zero. The activities necessary for the completion of this problem are listed in the table below (in weeks). The four corners will be calculated, starting with the ES and EF via a forward pass, then the LF and LS via a backward pass. A project consists of 11 activities, lettered A through K, below. The total project completion time and the critical path should also be determined. To calculate total float, subtract the task’s earliest finish (EF) date from its latest finish (LF) date. 25. Here are the activity times: Activity Time (weeks) Immediate Predecessor (s) Activity. Step 1. d) What is the probability of the project can be completed in 22 weeks or less?These can actually be calculated with a simple formula. After determining the ES, EF, LS, & LF times, calculate the Slack time for each activity using both Slack = LS – ES and Slack = LF – EF. Activity E Activity E has one preceding activity, H. Holgura total = LS – ES. QUESTION 1 Use the network diagram to answer the questions below: 1. Through clicking on Add New Column from the table in right pane and choose columns of type numbers. Slack – Float (S): It can be calculated in two ways. Can the project be completed in the required completion time of 38 weeks?ES, EF, LS, LF củamỗicông việc(CV) ES (Earliest Start time): thời gian sớm nhất mà mỗi CV có thể bắt đầu giả, sử rằng mọi CV trước nó đã kết thúc EF (Earliest Finish time) = ES + thời gian cần thiết để hoàn thành CV LF (Latest Finish time): thời trễ nhất mà một CV có thểQuestion: INSTRUCTIONS: For the project information given below, draw a network diagram showing the following: 1. Backward pass for \Late" times (LS;LF): In the LS column, the entry is \= cell containing LF cell containing duration. If the first activity's duration is 7 days, then its ES = 0 and EF = ES + Duration = 0 + 7 = 7. Chapter 3 or 9 Project Management How to calculate project scheduling duration Expected time ET of completion variance standard deviation, early start ES and. The total project completion time and the critical path should also be determined. B. Here are the activity times: Activity Time (weeks) Immediate Predecessor (s) Activity Time (weeks) Immediate Predecessor (s) A 7 - E 5 B. For Partially leveled schedule, what is the highest number of manpower are. Identify the Critical Path, its duration and each activity's ES, EF, LS and LF values (10 marks), ii. C. What is the critical path(s)? Activities A and B start on day 0. c) Determine ES, EF, LS, LF, and slack for each activity. Slack: 4. Expert Solution. Calculate the ES, EF, LS, LF, TF, FF, project duration, and critical path on the network diagram below. For the project in the table below: a) Draw the network diagram showing ES, EF, LS, LF, and the critical path. After we have determined the ES and EF for each activity, we are able to compute the LS and LF values for those activities. (15 points) b. Your instructor will provide the answers. (c) Identify the critical path. The backward pass assigns the last activity’s EF as its latest finish. Figure 7. For the following simple seven‐activity project, develop a precedence network, calculate all relevant characteristics of each activity (ES, EF, LS, LF, TF), and calculate the project duration. (c) Determine ES, EF, LS, LF, and slack time for each activity. d) Determine the probability that the project will be completed in 34 days or less. Step 5: Calculate the earliest start time (ES), earliest finish time (EF), latest start time (LS), and latest finish time (LF) for each activity or task, using the forward and backward pass methods. The main purpose of creating these videos is to share knowledge about Autodesk and other softwares for engineering students who just started learning Autodes. dont wasteSo the Late Finish Date (LF) for “D” is 12/08. Its LF is 23 + 3 = 26. Transcribed Image Text: Using the following information, create a project network diagram. b) Please see explanation for answer. Với các công thức tính toán đơn giản, người quản lý dự án có thể thời gian hóa các công việc và dự tính thời gian hoàn thành dự án một cách chính xác và khoa học hơn. • Identify the critical path for the project. 1. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Use the following legend for filling out the AON network: 3. The formulas and calculations are relatively simpler in approach 1 (but your preference may be different). (enter as a probability and round your response to three decimal places). This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. The LF of a node is equal to the LS (late start time) of its subsequent dependent node. The total project completion time and the critical path should. Question: 2. Question: QUESTION 3: (4 Marks) For the activities are provided in the following diagram: (a) Calculate ES, EF, LS, and LF for all activities. It utilizes the CPM diagram and the estimated duration of each activity to determine their Earliest Start (ES) and Earliest Finish (EF). 11-15 A marketing firm is developing a new Web-based media campaign for a client. The total project completion time and the critical path should also be determined. Consider the first node, Node A. Project Plan 365 works seamlessly on your Windows, Mac, iOS or Android devices. Activity. Draw the project network chart and. 2) Highlight or mark the critical path on your network. It is an input. Design DB 15 7 22 2 17-5 5. Operations Management questions and answers. If activity F is delayed by 2 days, will. Here LS = 7 and ES =1, therefore total float of Node A = 7 -. #manpropolibatam Tedy dan Tiodora, mahasiswa Prodi Administrasi Bisnis Terapan, Politeknik Negeri Batam mempresentasikan penyelesaian kasus project time mana. Through clicking on Add New Column from the table in right pane and choose columns of type numbers. You will find cases on critical path calculation and more. , ES, EF, LS, LF, slack). Activity Precedent Critical Duration ES EF LS LF Slack . Show the critical path. For the following network data, determine the critical path, ES, EF, LS, LF of each activity. Activities with zero total float are called "critical activities“. c. (Unlabeled relationships are F2S with O lag. For calculating the duration of critical path and float, it doesn’t matter which approach you take as long as you use the right formula. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. 1) Construct the project network 2) Show ES, EF, LS, LF, and slack for each activity on the project network chart 3) What are the critical activities? 4) How much time will be needed to complete this project? Show all your work and legend. If you use the formula, LS-ES or LF-EF will get activity two has eight days float. The total project completion time and the critical path should also be determined. (30 Points) a. 6. Then, determine the ES, EF, LS, LF, and the Slack times for all of the activities. Who are the experts? Experts are tested by Chegg as specialists in their subject area. Question: (10 Points) Given the AON network in Figure 2 (following page) determine the ES, EF, LS, LF, Total Float, and Free Float of each activity. a) True b) False c) Cannot be determined If I is delayed by 4 days, the project duration will be delayed by 4 days. Question: Instructions Using the following information, create a project network diagram. For A, EF is (0+1) = 1 week, and for B, it is (0+2) = 2 weeks. Xác định các thông số trong dự án như: ES, EF, LS, LF, thời gian dự trữ cho các công việc và thời gian hoàn thành dự án 3. Chapter 3 or 9 Project Management How to calculate project scheduling duration Expected time ET of completion variance standard deviation, early start ES and. design personnel jobs d. What is the probability of completing the project within 30 days? Project Management: The project management helps in arranging the task and order in a systematic way for completing the project in minimum time. 1. Identify the activities that must be completed to finish the project and their dependencies. • Thời gian hoàn thành cả dự án = Max { EF của tất cả công việc} • Tổng Chi phí = Tổng chi phi 1của mọI công việc. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. Complete the ES, EF, LS, LF and SL. Step-by-step explanation. Compute the ES, EF, LS, LF, total float and free float for each activity. During the forward pass, the boxes for ES(i) and EF(i) are filled in. Question: Suppose in Figure 7. 6. 2. Tasks that are on the critical path have identical LF and EF values. b) LF of activity g as calculated = 24 days. Question: Given the activity-on-node (AoN) diagram shown below, do the following: A) Compute the scheduling information (ES, EF, LS,LF and TF) and include the information in the diagram. Then do the CPM calculations and complete the table. d) What is the critical path for the project? e) How long do you expect the project to take to complete? We have an Answer from Expert. f) The probability that the project will be finished in 80 days is. (4) Perform a project management analysis for the data given below to determine ES, EF, LS, LF, and slack for each activity, the total project completion time, and the critical path. Expert Answer. 6. organize layout team b. EF = ES + t. Figure 2 shows these times noted on the network diagram next to each event using the following convention: The float calculations for the sample schedule are shown in Exhibit 5. (b) Determine the. . Calculate the ES, EF, LS, LF and slack for each activity and identify the critical path. 2. Civil Engineering questions and answers. B) Calculate the normal, least-cost, and crash duration for the project. There doesn't appear to be any results after searching for "draw CPM" and other search keywords in Google. Here are the activitytimes:Question: Draw the Critical Path Method (CPM) network diagram and highlight the critical path for activities shown in Table 1(a). This process is called Backward Calculation LS = (LF – D) + 1. Total Float shows the difference between the Earliest Start (ES) and Latest Start (LS) of an activity before the completion date is delayed. Your instructor will provide the answers. e. The ES of an activity equals the EF of its predecessor, and the EF is determined by the CPM formula: EF = ES + t (where 't' represents the activity duration). 4. The EF is calculated by EF = ES + t (the duration of an activity). D B Yes 3 8 11 8 11 0 . 12 = 1. It is an input. • Can the project be completed in 30 weeks?Do the same for the LS. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Highlight the critical path. Transcribed image text: Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Es Ef Ls Lf is a project management technique used to calculate the duration of a project. Determine ES, EF, LS, LF and slack for each activity. 8868. Fletcher would like to delermine ES, EF, LS, LF, and stack for each activily. . Question: egin{tabular}{|c|c|c|} hline ES & ID & EF hline SL & DESC & SL hline LS & D & LF hline end{tabular} 1. All fields marked * are mandatory. But this float is converting into free float. 0 of a particular accounting software project is being considered by Jose Noguera's technology firm in Baton Rouge. Also please show the answers clearly. All activities contained in the critical path have zero slack. Compute the Early Start (ES), Late Start (LS), Early Finish (EF) and Late Finish (LF) times for each activity in the network 3. txt and CPM1. a) Penjelasan ES, LS, EF, LF Pada Diagram Network Metode AoAES - Earliest StartEF - Earliest FinishLS - Latest StartLF - Latest FinishSlack = LS - ESElectrical Engineering questions and answers. 10) Use the following formula to calculate the Total Float (TF) for each activity: TF = LF - EF. Can the project be completed in 40 weeks ? b) Assume that activity A actually finished at the 9th week, activity B actually finished at the 10th Recalculate the expected project completion time. Can the project be completed in 40 weeks? Assume that activity A actually finished at the 9th week, activity B actually finished at the 10th Recalculate the expected project completion. Using a project start time of 0 (May 15) and a required project completion time of 180 days (or November 15), calculate the ES, EF, LS, and LF times and total slack for each activity. Relax and do your best. The ES for activity F is 21, and the EF for that activity is 26. Calculate the early start (ES), early finish (EF), late start (LS), late finish (LF), total float (TF) and free float (FF) for each activity c. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. (a) Draw a network with t, ES, EF, LS, and LF (followCritical Path Method Calculator – PERT and CPM Diagram 🥇. 32 1. As per the above diagram: There are 6 activities viz. Pada diagram jaringan, inilah tempat aktivitas-aktivitas bertemu. Identify the critical path. We will illustrate these concepts with an example: Critical Path Method (CPM): Any calculation method that shows the Critical Path in the schedule. 1. For the project below, a) Draw the network diagram showing ES, EF, LS, LF, and the critical path. a) Please see explanation for answer. The ES of an activity equals the EF of the one before it. But this float is converting into free float. Question: Prepare a precedence diagram showing the CPM Calculations and complete the CPM table using the following data. Problem 3. Free Float: The amount that a task can move without affecting other tasks. The total project completion time and the critical path. 8 and identify the critical path. Fletcher would like to detormine ES, EF, LS LF, and slack for each activity. Its ES is the EF of activity H, which is 16. Question: Enter the "Immediate Predecessors" information into cells B4-B11 Compute and enter the ES, EF, LS, LF, and Slack times for each activity into columns D through H as indicated Answer the following How long. Calculate the ES, Ef, LS and LF times for each activity. Operations Management questions and answers. Note: Both calculations must give you the same answers. From the following table, draw the precedence network, perform the CPM calculations, and complete the table entries, assuming interruptible activities. Given is a PERT project network diagram as shown below a) The project completion time =. If you use the formula, LS-ES or LF-EF will get activity two has eight days float. d) Determine the total project completion time and critical. 2. Calculate the ES, EF, LS, and LF times and the slack for each activity and identify the critical path for the project. This calculator will find either the equation of the ellipse from the given parameters or the center, foci, vertices (major vertices), co-vertices (minor vertices), (semi)major axis length, (semi)minor axis length, area, circumference, latera recta, length of the latera recta (focal width), focal parameter. Fletcher would like to determine ES, EF, LS, LF, and slack forea activity The total project completion time and the critical path should also be determined. Kelonggaran waktu total = LS - ES atau LF - EF Kelonggaran waktu bebas: Ini merujuk pada berapa lama aktivitas dapat ditunda tanpa memengaruhi aktivitas setelahnya. 40 Based the ES, EF, LS, LF, TF and FF values of above precedence diagram: If ac±vity Demo Shed is delayed for 5 days, the early start of Security Fence will be delayed Select one: a. Backward pass steps: 1. Part 1: (See figure 1 – part 1 below). 3. Operations Management. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. use the table entitled “ES EF LS LF. Here are the activity times: Immediate Predecessor(s) Time Activity (weeks) А.