Andrew L. Spinner is preparing his new musical, called "Cats at the Opera", WhICh WIT premiere in both Westway and Broadend simultaneously. Knowing that there is an indirect monthly cost of 1700€, he has compiled a table with the relevant information regarding each activity (1 month = 4 weeks)

a) Draw both the AOA and AON diagrams for this project.

b) Identify the existing activity paths, their duration, the existence of a (or several) critical path (s) and the project's duration.

c) If costs were not a constraint, what would be the shortest possible duration for the project? What would be the most cost-effective way to achieve that duration? Compute the total costs of this cost-effective way (with the new duration), compare it with the normal scenario and assess if this change should be made.

d) Back to the initial situation, Andrew has been informed that activity A will suffer a delav of two months due to the unavailability of costumes. Will this be a problem? What can Andrew do to make up for this delay and deliver the project within the normal estimated period? How much will be spent? Show your reasoning, using computations where necessary.
 

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Activity A Normal time (weeks) Crash Time (weeks) Normal costs (euros) Crash Costs (euros) Immediate Predecessor 10 6 800 B 9 7 700 1500 1100 - - C 7 6 900 1200 B 8 8 600 600 A,C E 5 500 900 D F 16 G H 695 10 1200 1800 - 6 1000 1400 C 4 1100 1500 E, F, G Activity A Normal time (weeks) Crash Time (weeks) Normal costs (euros) Crash Costs (euros) Immediate Predecessor 10 6 800 B 9 7 700 1500 1100 - - C 7 6 900 1200 B 8 8 600 600 A,C E 5 500 900 D F 16 G H 695 10 1200 1800 - 6 1000 1400 C 4 1100 1500 E, F, G