Similarly, (5 – y) and 6 – (5 – x + 5 – y) = x + y – 4 units are to be transported from
the factory at Q to the depots at B and C respectively Thus,
5 – y ≥ 0  ,  x + y – 4 ≥0
i e y ≤ 5  ,  x + y ≥
4
Fig 12