You are in charge of a project at the local community center. The center needs t

Question

You are in charge of a project at the local community center. The center needs to remodel one of the rooms in time for the start of a new program. Delays in the project mean that the center must rent other space at a nearby church at additional cost. Time and cost data for your project are contained in the table below. Your interest is in minimizing the cost of the project to the community center.

a. Using the normal times for each activity, what is the earliest date you can complete the project?

The corresponding project duration using the normal times is

Normal Time (days) Crash Time (days) Activity Normal Cost (S) Crash Cost ($) Immediate Predecessor(s) START START START 50 40 70 20 30 80 50 60 290 440 200 140 30 410 350 120 A, C A, C 6 E, F G, H FINISH

Explanation / Answer

A.

So, it takes 20 days.

B.

Task Pre Duration ES EF Critical LS LF Slack A 7 0 7 3 10 3 B 7 0 7 Yes 0 7 0 C B 3 7 10 Yes 7 10 0 D A,C 6 10 16 yes 10 16 0 E A,C 3 10 13 12 15 2 F B 6 7 13 9 15 2 G D 4 16 20 Yes 16 20 0 H E,F 5 13 18 15 20 2 Finish G,H 0 20 20 Yes 20 20 0

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