Engineering economics aid.

A project is required to be crash-completed in only 14 weeks instead of normal completion time. You can accelerate a task by completing it somewhere in between the fastest crash completion time and normal completion time. It you do that, please use linear interpolation to find the cost per week for duration in between normal and fastest crash completion. The Work Breakdown Structure of the project is tabulated as follows: Normal completion Fastest Crash Completion Work package Time Cost Duration Predecessor (weeks) ($Iweek) (weeks) Cost ($lweek) 20,000 90,000 10,000 22,000 10,000 20,000 5,000 9,000 [a] Create the Activity on Node (AON) network representation of this project. [b] Calculate the slack for each work package. [c] identify the critical path under normal completion durations. [d] if the project is to be crash-completed in only 14 weeks. Create an optimal crash schedule for each work package in the project