PM.66 Real estate developer Russell Call was working with a few contractors to make a number of improvements to one of his rental properties. After gathering information from these contractors he determined the following durations, predecessors, and costs of all the required activities: Activity Normal Time (weeks) Crashed Time (weeks) Normal Cost Crashed Cost Predecessor(s) A 3 $1,000 $3,300 В 2 1 $2,160 $2,460 3 2 $1,300 $3,000 D 7 3 $2,000 $2,500 A 3 $1,650 $2,100 B F 4 3 $4,100 $5,260 G 4 2 $1,650 $2,100 D, E What is the overall duration of the project? Number Which of the following activities has the lowest crash cost per week? O A O D O E

Activity Immediate Predecessors Normal Time (NT) (weeks) Normal Cost (NC) ($) Crash Time (CT) (weeks) Crash Cost (NC) ($) A --- 4 $200 2 $650 B A 6 $500 4 $900 C A 5 $600 3 $1,200 D A 6 $1000 5 $1,400 E B 6 $1,500 5 $2,000 F C, D 5 $200 4 $400 G E, F 6 $600 4 $1200 Determine the minimum cost-schedule for this project to be completed in 18 weeks.?

List the main advantages of PERT. List the main limitations.

Activity Normal_time Crash_time Normal_cost Crash_cost Slack 28 22 5800 6700 0 30 4200 4200 1 13 4500 4500 0 25 4300 6700 1 18 5700 6700 2 20 5200 6500 2 AB C D E F 30 13 33 29 Previous 34 The table shows normal time (in days), crash time (in days), normal cost (in dollars), crash cost (in dollars) and slack time (in days) of activities in a small construction project. According to this table which activity must be crashed first? Assume there is only one critical path. (Only type the name of the activity, Example: A. Next