LECTURE 8. PROJECT SCHEDULING 185 (d) Bob the Builder is ready to begin a construction project that must be completed in exactly a year. Bob senses that the project (as it is) needs more than a year to be completed. Thus, he has found a way to reduce the durations for the activities, but at a price. Bob's project has 4 activities, whose precedence relationships. du- rations (in months), and costs (in RM) are given in the table below. together with their crash times in months) and crash costs (in RM). urate the fflou "esid yug 10c Activity Prec. Act. Crash Time (months) 5 Duration (months) 8 9 6 7 B D Cost (RM) 25,000 20,000 16,000 27,000 Crash Cost (RM) 40,000 30,000 24,000 45,000 7 A B 4 4 Help Bob by doing the following: () Draw the arrow diagram for the project. (1) Determine the critical path(s) for the project (1) Crash the project to 1 year, Report the list of activities crashed and their reduction in num- ber of months along with the new cost to complete the project