1. Construct a PERT/CPM network diagram for a project having the following activities;

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Activities Lead Duration/ Cost

Activities Weeks

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A - 4 20,000

B - 2 10,000

C - 3 15,000

D A 2 12000

E B 2 16,000

F C 3 21,000

G D,E 2 20,000

H F 3 30,000

I D,E 2 7,000

J I, H 2 12,000

K G 2 10,000

L K,J 3 9,000

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1. How long will it take to complete this project?
2. Identify critical path for this project.

Compare the weekly costs using Earlier Start (ES) Earlier Finish (EF), with Last Start (LS) Last Finish (LF).