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HOMEWORK #3 Given the following project: Activity Predecessor Normal Time (day) Normal Cost ($) Crash Time (day) Crash Cost ($) A 4 800 2 1300 B 10 1200 7 2400 A 6 1100 4 1700 D A,B 7 1000 4 1600 E 10 2000 8 3000 F 900 C,D 5 (a) Draw the network and find the critical path duration of the project, total cost of project using normal times. (b) Calculate the maximum time reduction and crash cost-per-day (all activities may be partially crashed) for each activity. Then fill the table below. (Note: Activity f cannot be crashed) Activity Maximum Time Reduction (day) Cost to Crash per Period ($/day) A B D E F (c) Find the optimal way of getting a 20-day delivery time. What is the project cost? (d) Find the optimal way of getting a 18-day delivery time. What is the project cost