Z = 1000 x + 600 y subject to the constreint
(i) x + y ≤ 200
(ii) x ≥ 20
(iii) y ≥ 80
(iv) x ≥ 0; y ≥ 0
A (20,180) Z= Rs 128000
B(120,80) Z= Rs 168000
C (20,80) Z = Rs 68000
Z is maximised at
B (120, 80) Rs 168000 120 executive at B 80 economic class tickets