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Inventory Control (part 3) – Economic Batch Quantity – ACCA Management Accounting (MA)

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Comments

  1. deenanouman says

    January 20, 2021 at 8:10 pm

    ohkay so this holding cost i.e 7349 is called called the holding cost/year right?

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  2. sejazkhan says

    January 19, 2021 at 7:58 am

    So instead of reorder or delivery cost , we will be calculating setup costs?

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    • deenanouman says

      January 20, 2021 at 8:08 pm

      Yes

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  3. Asif110 says

    September 30, 2020 at 2:52 pm

    How are you sir ? Your lectures are amazing and useful as always.

    I had a question, why do you always only ask not to round off the Reorder Quantity or Set up Cost, but EBQ, you are rounding up.

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    • John Moffat says

      September 30, 2020 at 4:28 pm

      I certainly do not say to round off the Reorder quantity – I say not to round the number of orders (which is not the same thing). The EBQ and EOQ have to be rounded because it is not possible to order fractions of units.

      With regard to the number of orders (and I do explain this in the lecture!!), we are thinking long term and although some years there will be more orders and some year less orders, we are looking at the average number of orders.

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      • Asif110 says

        September 30, 2020 at 4:44 pm

        Well put. May God increase your forbearance with us students, and bless you with more wisdom & eloquence.

      • John Moffat says

        September 30, 2020 at 4:56 pm

        You are welcome 🙂

  4. Alysonlee says

    June 3, 2020 at 9:58 am

    Hello, thank you for the well-explained lectures.
    Is it correct to say that Inventory value per unit = Purchase cost per unit ?

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  5. DhirajACCA says

    April 15, 2020 at 4:45 pm

    A well explained chapter Mr. Moffat.

    Thank you so much ,

    Im eager to see what comes next !

    Hope you’re well & staying safe in these trying times.

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    • John Moffat says

      April 15, 2020 at 5:23 pm

      Thank you for your comment 🙂

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  6. Rozay58 says

    April 3, 2020 at 5:17 pm

    Hi John.

    is it safe to say that Inventory cost = Holding cost + Reorder cost ?

    and that Total cost = Inventory cost + purchase cost?

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    • John Moffat says

      April 4, 2020 at 7:59 am

      Correct 🙂

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      • Asif110 says

        September 30, 2020 at 2:48 pm

        Wouldn’t Purchase cost be accounted for as one of the parts of Inventory cost, besides Reorder and Holding Cost ? We were just not calculating earlier because it was not affecting our cost. Why consider it separate to the Inventory Cost as the user demonstrated above, and you approved.

      • John Moffat says

        September 30, 2020 at 4:29 pm

        No. The purchase cost itself is not a cost of holding inventory. It is a cost of sales regardless of how much is kept in inventory.

  7. aldahasa says

    January 28, 2020 at 1:09 pm

    Hello. Thank you for your lectures. They are very clear.

    I wonder can the period for which we get the D, R and other data, different from one year, example a week or month? Do we always need yearly data?

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    • John Moffat says

      January 28, 2020 at 3:23 pm

      It can be any period, provided that D is the demand for the period (e.g. for a month) and Ch is the stockholding cost for the same period (e.g. per month).
      When using the EBQ formula, then again R is the production rate for the same period.

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      • aldahasa says

        March 4, 2020 at 1:58 pm

        Thank you. It makes sense :). Was looking at an exercise in a book that apparently was a mistake as had data for different periods of time and used them in a formula as they were. Just wanted to make sure. thanks again 🙂

      • John Moffat says

        March 4, 2020 at 3:11 pm

        You are welcome 🙂

  8. mufano says

    December 21, 2019 at 12:38 am

    Hallo sir
    On the EBQ are we not supposed to multiply by 0.9 hence getting 2449 units instead of dividing and getting 2722 units

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    • John Moffat says

      December 21, 2019 at 10:20 am

      No, we do not multiply by 0.9, and the EBQ is 2722 units as I show in the lecture.

      I am guessing that you are confusing it with the average inventory which is the EBQ divided by 2 and multiplied by 0.9.

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      • mufano says

        December 22, 2019 at 1:07 am

        ok thank you

      • John Moffat says

        December 22, 2019 at 9:31 am

        You are welcome 🙂

  9. gerdthenerd09 says

    November 9, 2019 at 4:48 pm

    Why has the purchase cost not been included in the total cost? 50000 x 30$ = 1500000$

    i.e. does the ‘shop’ not buy the unit off the ‘shops factory’ or our they provided free-of-charge?

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    • John Moffat says

      November 9, 2019 at 6:40 pm

      The purchase cost is incurred anyway – whatever the order quantity is each time. It is therefore irrelevant in deciding what the economic order quantity is.

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  10. michaela1995 says

    August 15, 2019 at 5:09 pm

    when you worked out the holding cost , why did you multiply bu 0.9 ?

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    • elnur96 says

      September 10, 2019 at 5:27 pm

      As he explained earlier we never reach maximum level of inventory because we use inventory gradually while it is produced, so we use this coefficient.

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    • Asif110 says

      November 20, 2020 at 7:13 pm

      Basically CH x 1 = CH only. Consider “1” as 100% of CH amount. By doing (1-D/R) we are considering “1” as the whole 100%, and now we have to reduce this. The more your Demand over the Manufacturer’s Rate capacity, the more time it would require to produce that batch and deliver to your Warehouse, and the lower your stock will get by the time all the stock arrives because customers are still buying and reducing your stock. Therefore the more the demand, the more time it will require, and the lesser from that 1(100%) your figure calculated out of (1-D/R) will get. So if it becomes 0.9, then it means 0.9 (90%) of Holding Cost we calculate.

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