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MATHEMATICS
2 Minimise Z = – 3x + 4 y
subject to x + 2y ≤ 8, 3x + 2y ≤ 12,  x  ≥  0, y ≥ 0 3 Maximise Z = 5x + 3y
subject to 3x + 5y  ≤ 15, 5x + 2y ≤ 10, x  ≥ 0, y ≥ 0