A company is faced with a project of implementing a new ERP system.The information on activity precedence,time,and cost is given below (time in weeks).

\begin{array} { | l | l | r | r | r | r | r | } \hline \text { Activity } & \text { Predecessor(s) } & \begin{array} { l } \text { Standard } \\\text { Time }\end{array} & \begin{array} { l } \text { Crash } \\\text { Time }\end{array} & \begin{array} { l } \text { Standard } \\\text { Cost }\end{array} & \begin{array} { l } \text { Crash } \\\text { Cost }\end{array} & \begin{array} { l } \text { Crash } \\\text { Cost/Wk }\end{array} \\\hline \text { A } & \text { none } & 9 & 7 & \$ 700 & \$ 1100 & \$ 200 \\\hline \text { B } & \text { A } & 7 & 6 & \$ 600 & \$ 750 & \$ 150 \\\hline \text { C } & \text { A } & 5 & 3 & \$ 500 & \$ 1000 & \$ 250 \\\hline \text { D } & \text { B } & 4 & 2 & \$ 550 & \$ 800 & \$ 125 \\\hline \text { E } & \text { C } & 6 & 5 & \$ 800 & \$ 900 & \$ 50 \\\hline \text { F } & \text { D,E } & 5 & 3 & \$ 700 & \$ 1000 & \$ 150 \\\hline \text { G } & \text { D } & 8 & 6 & \$ 1000 & \$ 1200 & \$ 100 \\\hline\end{array}

The company would like to determine which activities to crash and by how much in order to
complete the ERP implementation in 24 weeks.Using linear programming and Excel Solver,find
the best solution

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