help me to answe q 4

Question 4: Suggested Time - 30 minutes (CO2/PO2 - 5%) A facility department is trying to set up an assembly line and has identified the various tasks. The tasks and their relationship to each other are shown in the Table 3 with production of 600 units per day and working in two 8-hour shifts. Table 3 Task Time to perform (sec.) Preceding Task 20 A B D E F G 30 25 10 55 30 25 40 A D,B,C E F G i) Draw a precedence diagram. [CO2/PO2/C3) (2 marks) ii) Calculate the required cycle time and the theoretical number of workstations. [CO2/PO2/C3) (2 marks) ili) Determine the actual number of workstations in the line. Use longest processing times for your decision. [CO2/PO2/C3] (3.5 marks) iv) What is the idle time and line efficiency? [CO2/PO2/C3) (2.5 marks)