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Maximise and Minimise : Z = 4x + 3y - ...

Maximise and Minimise :
`Z = 4x + 3y - 7` subject to the constraints:
`x + y le 10, x +y ge 3, , x le 8 , y le 9 , x,y ge 0`

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The correct Answer is:
maximum value = 31 at (8,2) and minimum value = 2 at (0,2)
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