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John Moffat.
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- May 24, 2018 at 7:34 am #453715
Hi Sir,
I have confusion on the technical article from ACCA website about the Throughput accounting and the theory of contraints, part 2. The example is Cat co makes a product using 3 machines – X, Y and Z. In the solution, buy Z will need additional sales units = 600-500=100 units, buy Z and Y would need additional sales units = 800-500=300 units, and buy Z,Y&X require additional sales units=1,000-500=500 units. I don’t understand this concept. Are these sales units are assumption or else?
Thank you.
May 24, 2018 at 2:17 pm #453752The question tells you that demand is 1,000 units a week.
But although they would therefore like to produce 1000 units per week, on the current capacities they are only capable of producing 500 (and selling) units a week (because the units have to be worked on by all three machines, and Z can only work on 500 units a week and so slows everything down).So…..they want to make Z work faster. They can do this by ‘Purchase 3’ because then Z is capable of working on 1,050 units. However X can still only work on 600 units, so that is then the slowest machine and so they can then produce (and sell) 600 units.
So they can make X faster by ‘Purchase 1’, and the same thinking applies.
May 24, 2018 at 3:56 pm #453772Thank you for the explanation, Sir. I understood with the concept now. But i am still not clear with the logic of formula to get additional sales units. In this case for buy Z is 600-500=100 units. Then for buy Z and Y, additional sales units 800-500=300 units. Buy Z, Y anf X the additional sales units =1,000-500=500 units.
May 24, 2018 at 5:22 pm #453796I am not sure which bit you are not clear about. As you make the various purchases (improving or replacing the machines), the bottleneck changes and as a result you are able to produce (and therefore sell) more units each time.
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