please solve it in 40 minute please....................

ii. AAA Techology Sdn. Bhd., recently has to provide a schedule for purcahsing a high technology equipment that involved various activities, as shown in Table 1. Table 3 Activity, predecessor and time Activity Activity Predecessor 1 2 3 1 2 5 2 6 3,4 7 5,6 Time (weeks) 7 10 6 5 4 4 3 2 a) Construct the network diagram. (10 marks) b) Identify all the paths in the network, and compute the length of each, and indicate the critical path. (6 marks) c) From the network in (a), determine the earliest start and finish times, latest start and finish times, and slack for each activity. (7 marks) d) From the information in (c), how could you determine the critical path from this information. (2 marks)