do it aith proper formulas, it should be hand written

Assignment 2 Problem 10 Activity Precedes FH E F A B D E F G H I 1 Duration in weeks 4 5 7 12 6 6 3 4 7 5 Available Cost of weeks to Crash Crashing 1 $300 2 $200 1 $500 2 $300 2 $700 1 $500 0 N/A 1 $200 1 $800 1 $200 G J I end a) Draw the precedence network b) Indicate the paths to project completion, their duration, and slack. Which one is the critical path? c) For each activity, use the PERT/CPM solution technique to show the early start, early finish, last start, and late finish d) We need to reduce the project by 4 weeks - which activities do we crash? What is the total cost of crashing this project