Software Ltd has established a project team to undertake some important market research work. It is possible to reduce the expected or 'normal' times for certain activities in units of one week (but not in fractions of a week) but at an extra cost. The relevant information is given below. Predecessor A C B B A Normal Time (weeks) Normal Cost ($) 5000 B LO C 5 4 2 4 5 LO 5 4 3 3000 6000 1000 4000 Activity Early Start Early Finish Late Start 8000 Crash Time (weeks) 3 4 1 4 3 1 2 Crash Cost ($) Late Finish 6000 B, C 4000 F 5000 2 In addition to the costs shown there is a cost of retainer fees and administration overheads of $10000 for each week that the project lasts. a) Determine ES, EF, LS, LF, and slack for each activity. Slack 3000 21000 1000 7000 14000 24000 15000

Software Ltd has established a project team to undertake some important market research work. It is possible to reduce the expected or 'normal' times for certain activities in units of one week (but not in fractions of a week) but at an extra cost. The relevant information is given below. In addition to the costs shown there is a cost of retainer fees and administration overheads of $10000 for each week that the project lasts. a) Determine ES, EF, LS, LF, and slack for each activity. b) What is the normal expected duration of the project? What is the critical path? c) What would be the cost of completing the project using the normal durations? The cost of completing the project using the normal durations is: d) What would be the duration of the project if costs are to be minimized? Therefore the optimal project duration is weeks, and the optimal project cost is $