Evaluate z=4x+3y at corners: (0,0)→0, (0,40)→120, (20,40)→200, (60,20)→300, (60,0)→240. Max =300<350, so Column B is greater.
The objective function z=4x+3y can be maximised subject to the constraints 3x+4y≤24, 8x+6y≤48, x≤5, y≤6, x≥0, y≥0 :
Held on 30 May 2023 · Verified 13 Jul 2026.
at one point only
at two points only
at an infinite number of points
no point exists
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