10.5-5.* The 21st Century Studios is about to begin the produc- tion of its most important and most expensive) movie of the year. The movie's producer, Dusty Hoffmer, has decided to use PERT/CPM to help plan and control this key project. He has iden- tified the eight major activities (labeled A, B, ...,H) required to produce the movie. Their precedence relationships are shown in the project network below. START FINISH B Dusty now has learned that another studio also will be com- ing out with a blockbuster movie during the middle of the up- coming summer, just when his movie was to be released. This would be very unfortunate timing. Therefore, he and the top man- agement of 21st Century Studios have concluded that they must accelerate production of their movie and bring it out at the begin- ning of the summer (15 weeks from now) to establish it as THE movie of the year. Although this will require substantially in- creasing an already huge budget, management feels that this will pay off in much larger box office earnings both nationally and in- ternationally. Dusty now wants to determine the least costly way of meet- ing the new deadline 15 weeks hence. Using the CPM method of time-cost trade-offs, he has obtained the following data. Norinal Time Crash Time Normal Cost Crash Cost Activity 5 weeks 3 weeks 4 weeks 6 weeks 5 weeks 7 weeks 9 weeks 8 weeks 3 weeks 2 weeks 2 weeks 3 weeks 4 weeks 4 weeks 5 weeks 6 weeks $20 million $10 million $16 million $25 million $22 million $30 million | $25 million | $30 million $30 million $20 million $24 million $43 million $30 million $48 million $45 million $44 million