Forums › Ask CIMA Tutor Forums › Ask CIMA P1 Tutor Forums › Linear Programming – ISO Contribution Line
- This topic has 2 replies, 2 voices, and was last updated 7 years ago by Cath.
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- March 3, 2017 at 9:27 am #375256
In your lecture CIMA P1 Linear Programming (b) Shadow prices, you ultimately decide that point B on the Graphical approach is the optimum production plan as this is where the ISO Contribution Line reaches furthest out whilst staying within the Feasible Region due to the angle of the line based on 6S, 9E being extrapolated out.
MY question is why B, and not A? Albeit point A is on the ‘S’ axis, it is still within the Feasible Region and if you were to plot the ISO Contribution Line at the same angle it would be further out than that which crosses point ‘B’, even though all the points on the line at this point would be outside the Feasible Region, it is still within the region at point ‘A’.
March 3, 2017 at 10:13 am #375273Ok, so I have worked this out myself, my ‘S’ axis is not proportionate in length per marker (10,20,30,40) to my ‘E’ axis. It’s slightly shorter and as such gives the impression that ‘A’ is further out than it should be. Calculating the contribution at point ‘A’ also proves it is lower than ‘B’.
Well that was fun!
March 3, 2017 at 7:01 pm #375355Hi, thanks for your question & sorry there wasn’t time to solve it between your posts but sounds like you’ve worked it through correctly.
If you watch the videos this method is also demonstrated there.
Thanks again,
Cath - AuthorPosts
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