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A Small Town Wants to Build Some New Recreational Facilities

Question 56

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A small town wants to build some new recreational facilities.The proposed facilities include a swimming pool,recreation center,basketball court and baseball field.The town council wants to provide the facilities which will be used by the most people,but faces budget and land limitations.The town has $400,000 and 14 acres of land.The pool requires locker facilities which would be in the recreation center,so if the swimming pool is built the recreation center must also be built.Also the council has only enough flat land to build the basketball court or the baseball field.The daily usage and cost of the facilities in $1,000)are shown below.
 Variable  Facilty  Usage  Cost $1,000)  Land x1 Swimming pool 4001002x2 Recreation center 5002003x3 Basketball court 3001504x4 Baseball field 2001005\begin{array} { r r r r r } \text { Variable } & \text { Facilty } & \text { Usage } & \text { Cost \$1,000) } & \text { Land } \\\hline \mathbf { x } _ { 1 } & \text { Swimming pool } & 400 & 100 & 2 \\\mathbf { x } _ { 2 } & \text { Recreation center } & 500 & 200 & 3 \\\mathbf { x } _ { 3 } & \text { Basketball court } & 300 & 150 & 4 \\\mathbf { x } _ { 4 } & \text { Baseball field } & 200 & 100 & 5\end{array}
Based on this ILP formulation of the problem and the indicated optimal solution what values should go in cells
B5:G12 of the following Excel spreadsheet?
 MAX: 400x1+500x2+300x3+200x4 Subject ta: 100x1+200x2+150x3+100x4400 budget 2x1+3x2+4x3+5x414 land x1x20 pool and recreation center x3+x41 basketball and baseball x1=0.1\begin{array} { l l l } \text { MAX: } & 400 \mathbf { x } _ { 1 } + 500 \mathbf { x } _ { 2 } + 300 \mathbf { x } _ { 3 } + 200 \mathbf { x } _ { 4 } & \\\text { Subject ta: } & 100 \mathbf { x } _ { 1 } + 200 \mathbf { x } _ { 2 } + 150 \mathbf { x } _ { 3 } + 100 \mathbf { x } _ { 4 } \leq 400 & \text { budget } \\& 2 \mathbf { x } _ { 1 } + 3 \mathbf { x } _ { 2 } + 4 \mathbf { x } _ { 3 } + 5 \mathbf { x } _ { 4 } \leq 14 & \text { land } \\& \mathbf { x } _ { 1 } - \mathbf { x } _ { 2 } \leq 0 & \text { pool and recreation center } \\& \mathbf { x } _ { 3 } + \mathbf { x } _ { 4 } \leq 1 & \text { basketball and baseball } \\& \mathbf { x } _ { 1 } = 0.1 &\end{array}
Solution: x1,x2,x3,X4)=1,1,0,1\left. \mathbf { x } _ { 1 } , \mathbf { x } _ { 2 } , \mathbf { x } _ { 3 } , \mathbf { X } _ { 4 } \right) = 1,1,0,1 )
 A small town wants to build some new recreational facilities.The proposed facilities include a swimming pool,recreation center,basketball court and baseball field.The town council wants to provide the facilities which will be used by the most people,but faces budget and land limitations.The town has $400,000 and 14 acres of land.The pool requires locker facilities which would be in the recreation center,so if the swimming pool is built the recreation center must also be built.Also the council has only enough flat land to build the basketball court or the baseball field.The daily usage and cost of the facilities in $1,000)are shown below.   \begin{array} { r r r r r }  \text { Variable } & \text { Facilty } & \text { Usage } & \text { Cost \$1,000) } & \text { Land } \\ \hline \mathbf { x } _ { 1 } & \text { Swimming pool } & 400 & 100 & 2 \\ \mathbf { x } _ { 2 } & \text { Recreation center } & 500 & 200 & 3 \\ \mathbf { x } _ { 3 } & \text { Basketball court } & 300 & 150 & 4 \\ \mathbf { x } _ { 4 } & \text { Baseball field } & 200 & 100 & 5 \end{array}   Based on this ILP formulation of the problem and the indicated optimal solution what values should go in cells B5:G12 of the following Excel spreadsheet?   \begin{array} { l l l }  \text { MAX: } & 400 \mathbf { x } _ { 1 } + 500 \mathbf { x } _ { 2 } + 300 \mathbf { x } _ { 3 } + 200 \mathbf { x } _ { 4 } & \\ \text { Subject ta: } & 100 \mathbf { x } _ { 1 } + 200 \mathbf { x } _ { 2 } + 150 \mathbf { x } _ { 3 } + 100 \mathbf { x } _ { 4 } \leq 400 & \text { budget } \\ & 2 \mathbf { x } _ { 1 } + 3 \mathbf { x } _ { 2 } + 4 \mathbf { x } _ { 3 } + 5 \mathbf { x } _ { 4 } \leq 14 & \text { land } \\ & \mathbf { x } _ { 1 } - \mathbf { x } _ { 2 } \leq 0 & \text { pool and recreation center } \\ & \mathbf { x } _ { 3 } + \mathbf { x } _ { 4 } \leq 1 & \text { basketball and baseball } \\ & \mathbf { x } _ { 1 } = 0.1 & \end{array}  Solution:  \left. \mathbf { x } _ { 1 } , \mathbf { x } _ { 2 } , \mathbf { x } _ { 3 } , \mathbf { X } _ { 4 } \right) = 1,1,0,1  )

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