Covers Lessons 4–6: Gantt charts, resource allocation, dummy activities, multiple critical paths, cost-time trade-offs, and mixed project problems.
Multiple Choice
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Short Answer
1. A project has: A(3,-), B(4,A), C(2,A), D(5,B), E(5,C), F(2,D,E). (a) Find all critical paths. (b) If D's duration increases to 6, what happens? (c) Draw a Gantt chart showing both paths. (d) Crash D by 1 ($\$500$) and E by 1 ($\$400$). New duration and cost? 5 MARKS
2. (a) Explain why a Gantt chart is better than an AOA network for presenting a project schedule to a client. (b) A project has two critical paths that share no activities. You have a budget to crash one activity on each path by 1 day. A shared start activity could be crashed by 1 day for the same cost as two separate crashes. Why is the shared crash better? (c) What is the difference between a lag and a lead? 3 MARKS
Q1 (5 marks): (a) Path correct [1]. (b) Effect [1]. (c) Gantt [1.5]. (d) Cost [1.5].
Q2 (3 marks): (a) Explanation [1]. (b) Reason [1]. (c) Difference [1].
Tick when you have finished all questions and checked your answers.