a$)$ based on the given information regarding the activities for the project, the project completion date $=\_\_$ weeks

b$)$ to reduce the duration of the project to $10$ weeks at the lease cost, the following is the order of what needs to be followed while crashing the activities: the first activity to crash is $\_\_$ by $2$ weeks for an additional total per week crashing cost of $\_\_$ dollars

c$)$ new requirements are to reduce the project to seven weeks. Continue to crash the activities from $10$ weeks based on the above crashing already completed, the following is the order for crashing:

next activity to crash in order is $\_\_$ by two weeks out of her crushing cost of $\_\_$ dollars

Next, one should crash activity $\_\_$ and activity E by one week at a total per week crashing cost of $\_\_$ dollars.

Total cost of crashing the project to seven weeks $=\_\_\_\_$ dollars