The feasible solution for a LPP is shown in Fig. 12.12. Let Z = 3x – 4y be the
objective function. Minimum of Z occurs at
Value of Z = 3x – 4y, at corner points are –
At (0, 0) = 0
At (0, 8) = -32
At (4, 10) = -28
At (6, 8) = -14
At (6, 5) = -2
At (5, 0) = 15
So, clearly minimum value is at (0, 8)