X_Print Manufacturing produces laser printers. A plant assembles the PL-400 model. The standards indicate that a worker can assemble five printers a day. The cost to produce this model is $350 and the company thinks it costs $5 to stock one printer for a month. Workers earn $1,500 a month and can be hired every worker for $500; layoff cost is $750 per worker in the department of assembly. The details of the claim are as follows.

Formulate as a linear programming model. Consider that it is not allowed shortages, subcontract or overtime.

Using lingo

\begin{tabular}{|l|c|c|c|c|c|c|c|} \hline MES & JULIO & AGOSTO & SEPTIEMBRE & OCTUBRE & NOV. & DIC. & TOTAL \\ \hline DAS HBILES & 21 & 22 & 21 & 23 & 19 & 20 & 126 \\ \hline DEMANDA & 1020 & 950 & 800 & 1000 & 1250 & 650 & 5670 \\ \hline \end{tabular}