Question
Write the LPP formulation of the following assignment problem:
b) Solve the following game graphically:
Answer :
Word Count : 253
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(a) Assignment problem Cost matrix (Jobs → Machines): [ \begin{array}{c|ccc} & M_1 & M_2 & M_3\ \hline J_1 & 18 & 16 & 12\ J_2 & 10 & 7 & 10\ J_3 & 14 & 8 & 18 \end{array} ] ### LPP formulation Let (x_{ij}=1) if job (J_i) is assigned to machine (M_j), 0 otherwise. Minimize [ Z=18x_{11}+16x_{12}+12x_{13}+10x_{21}+7x_{22}+10x_{23}+14x_{31}+8x_{32}+18x_{33} ] Subject to [ \begin{aligned} &x_{11}+x_{12}+x_{13}=1 &&(J_1)\ &x_{21}+x_{22}+x_{23}=1 &&(J_2)\ &x_{31}+x_{32}+x_{33}=1 &&(J_3)\ &x_{11}+x_{21}+x_{31}=1 &&(M_1)\ &x_{12}+x_{22}+x_{32}=1 &&(M_2)\ &x_{13}+x_{23}+x_{33}=1 &&(M_3)\ &x_{ij}\in{0,1} \end{aligned} ] ### Optimal assignment (numerical solution) [ J_1 \to M_3,\quad J_2 \to M_1,\quad J_3 \to M_2 ] Minimum total cost: [ Z_{\min}=12+10+8= \boxed{30} ]
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