I need help with the a$)$ Based on the given information regarding the activities for the project, the project length $=16$ weeks.

b$)$ The total cost required for completing this project on normal time $=$$$12,900.$

c$)$ For reducing the duration of the project by one week, the activity that should be crashed first is activity

$.$

The cost of the project based on the first activity selected for crashing will increase by $$70.$

d$)$ The maximum weeks by which the project can be reduced by crashing $=$

weeks.

Total cost of crashing the project to minimum $($or maximum weeks possible$)=$$$.$Total cost of crashing the project to minimum$($or maximum weeks$$ possible$)=$$