Question: 6. Reconsider Problem 18 in Chapter 8 under the con- straint that the problem must be completed in 16 weeks. This time, however, activities c,

6. Reconsider Problem 18 in Chapter 8 under the con- straint that the problem must be completed in 16 weeks. This time, however, activities c, f, h, and i may be crashed as follows. Assume partial crashing. Additional Activity Crash Time (weeks) Cost per Week 7 $40 f 6 20 h 2 10 i 3 30 Find the best schedule and its cost. 18. The events of the project below are designated as 1, 2, and so on. (a) Draw the PERT network and the Gantt chart. (b) Find the critical path. (c) Find the slacks on all the events and activi- ties Prec. Evt. Suc. Evt. Activity TE (weeks) Prec. Activ. a 1 none 2 3 3 6 b none 1 1 8 none d 4 5 5 a 2 3 3 4 e 7 5 5 10 b f 5 Prec. Evt. Suc. Evt. TE (weeks) Prec. Activ. Activity 4 5 6 h 6 7. 7 4 5 d, e, f a un i g

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