please help solve all

data are fisted in the following table: \begin{tabular}{cccccc} \hline Activity & \begin{tabular}{c} Normal \\ Time (woeks) \end{tabular} & \begin{tabular}{c} Crash \\ Time (weeks) \end{tabular} & \begin{tabular}{c} Normal \\ Cost \end{tabular} & \begin{tabular}{c} Total Cost \\ with \\ Crashing \end{tabular} & Immediate Predecessor(s) \\ \hline A & 3 & 2 & $1 , 000 & $1 , 800 & - \\ B & 2 & 1 & $2 , 300 & $3 , 050 & - \\ C & 1 & 1 & $400 & $400 & - \\ D & 7 & 3 & $1 , 400 & $1 , 700 & A \\ E & 6 & 3 & $900 & $1 , 050 & 8 \\ F & 2 & 1 & $4 , 250 & $5 , 7504 & C \\ G & 4 & 2 & $1 , 600 & $2 , 200 & D, E \\ \hline \end{tabular} 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 least 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 at a per week crashing cost of dollars. Next, one should crash activity D and activity by 2 weeks for an additional total per week crashing cost of dollars. c) New requirements are to reduce the project to 7 weeks. Continuing 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 2 weeks at a per week crashing cost of dollars. Next, one should crash activity and activity E by 1 week at a total per week crashing cost of dollars. Total cost of crashing the project to 7 weeks = dollars