"Smartphone Production at QuickTronics" on Page 226 and find the minimum annual cost of the current plan when hiring/firing is allowed.

\begin{tabular}{|c|c|c|c|c|c|c|c|c|c|} \hline 1 & A & B & C & D & E & F & G & H & 1 \\ \hline \multicolumn{10}{|c|}{ Aggregate Plan Decision Variables (demand, inventory, production in '000s) } \\ \hline 2 & Period & \begin{tabular}{c} \# Teams \\ Hired \end{tabular} & \# Teams Laid off & \# Teams & Overtime & Inventory & Stockout & Production & Demand \\ \hline 3 & 0 & 0 & 0 & 667 & 0 & 1,000 & 0 & & \\ \hline 4 & 1 & 0 & 167 & 500 & 0.0 & 3000.0 & 0.0 & 10,000 & 8,000 \\ \hline 5 & 2 & 0 & 0 & 500 & 0.0 & 3000.0 & 0.0 & 10,000 & 10,000 \\ \hline 6 & 3 & 0 & 0 & 500 & 0.0 & 2000.0 & 0.0 & 10,000 & 11,000 \\ \hline 7 & 4 & 0 & 0 & 500 & 0.0 & 1000.0 & 0.0 & 10,000 & 11,000 \\ \hline 8 & 5 & 0 & 0 & 500 & 0.0 & 0.0 & 0.0 & 10,000 & 11,000 \\ \hline 9 & 6 & 100 & 0 & 600 & 0.0 & 0.0 & 0.0 & 12,000 & 12,000 \\ \hline 10 & 7 & 218 & 0 & 818 & 0.0 & 3360.0 & 0.0 & 16,360 & 13,000 \\ \hline 11 & 8 & 0 & 0 & 818 & 0.0 & 5720.0 & 0.0 & 16,360 & 14,000 \\ \hline 12 & 9 & 0 & 0 & 818 & 0.0 & 7080.0 & 0.0 & 16,360 & 15,000 \\ \hline 13 & 10 & 0 & 0 & 818 & 8030.0 & 7443.7 & 0.0 & 17,364 & 17,000 \\ \hline 14 & 11 & 0 & 0 & 818 & 8180.0 & 5826.3 & 0.0 & 17,383 & 19,000 \\ \hline 15 & 12 & 0 & 151 & 667 & 6670.0 & 1000.0 & 0.0 & 14,174 & 19,000 \\ \hline \end{tabular} \begin{tabular}{|c|c|c|c|} \hline K & L & M & N \\ \hline \multicolumn{4}{|c|}{ Constraints } \\ \hline Inventory & Overtime & Production & Workforce \\ \hline & & & 0 \\ \hline 0 & 5000 & - & 0 \\ \hline 0 & 5000 & - & 0 \\ \hline 0 & 5000 & - & 0 \\ \hline 0 & 5000 & - & 0 \\ \hline 0 & 6000 & - & 0 \\ \hline 0 & 8180 & \begin{tabular}{lll} - & \end{tabular} & 0 \\ \hline 0 & 8180 & \begin{tabular}{lll} - & \end{tabular} & 0 \\ \hline 0 & 8180 & - & 0 \\ \hline 0 & 150 & \begin{tabular}{lll} - & \end{tabular} & 0 \\ \hline 0 & 0 & \begin{tabular}{lll} - & \end{tabular} & 0 \\ \hline 0 & 0 & - & 0 \\ \hline \end{tabular} Aggregate Plan Costs \begin{tabular}{|c|c|c|c|c|c|c|c|} \hline Period & Hiring & Lay off & Regular time & Overtime & Inventory & Stockout & Material \\ \hline 1 & & & & & & & \\ \hline 2 & & & & & & & \\ \hline 3 & & & & & & & \\ \hline 4 & & & & & & & \\ \hline 5 & & & & & & & \\ \hline 6 & & & & & & & \\ \hline 7 & & & & & & & \\ \hline 8 & & & & & & & \\ \hline 9 & & & & & & & \\ \hline 10 & & & & & & & \\ \hline 11 & & & & & & & \\ \hline 12 & & & & & & & \\ \hline Total & & & & & & & \\ \hline \end{tabular} \begin{tabular}{|l|r|} \hline Item & Cost ('000s) \\ \hline Material cost/unit & 500 \\ \hline Inventory holding cost/unit/month & 50 \\ \hline Marginal cost of stockout/unit/month & 100 \\ \hline Hiring and training cost/worker & 400 \\ \hline Layoff cost/worker & 800 \\ \hline Team labor hours required/ thousand units & 8 \\ \hline Regular time cost/hour & 4 \\ \hline Over time cost/hour & 6 \\ \hline Maximum overtime per worker per month & 10 \\ \hline Team size & 10 \\ \hline \end{tabular} Total Cost = Aggregate Plan (Question)