Question relating Labour Qn : budgeted production for the next period is 4800 units, each unit requires 5 labour hours to make. Labour is paid 10 per hour. Idle time represents 20% of total labor. What is the budgeted labour cost for the next period??
I’ve got a question regarding Examples 5 and 6 (The Re-order levels).
Lets say your EOQ requires you to place 12 orders a year. In this example, that would mean that your inventory is never above 400 units.
But then what if your inventory asks you to re-order at 500 units.
If we listen to our EOQ we will be in a situation where we’re going to be out of stock, but if we listen to our re-order level calculations, we’re spending extra unnecessary money on stock holding costs.
So i guess my question is:
1) which of these costs is more acceptable (Loss of sales vs increased stock holding cost) 2) Does this matter in the exam?
Sorry, I was just reading this back and my example is bad – But I’m essentially asking what happens when there’s a conflict between the EOQ and the Re-order quantity.
Is this likely to happen? and what do we do when there is a conflict?
They are two separate things, and there is no conflict.
The EOQ is always calculated in the normal way. If we know exactly what the demand over the lead time is, then we will place a new order at that level. If the demand over the lead time is uncertain, then to be safe we will place a new order at the highest level of demand. As a result we will be carrying buffer/safety inventory all the time of the excess of the maximum demand over the average demand over the lead time. It won’t affect the EOQ itself.
First of all thank you for offering these lecture notes. I think parts c and d (here) need removing from the lectures listed for F9 as this is causing some confusion and looking at previous comments they are not examinable for F9 and not included in the F9 notes, Thanks
Excellent lectures but still not clear why parts c and d lectures relevant notes are not included. If they are not examinable for F9 and not included in the F9 notes, then why we are consuming time on these lectures.
In theory it is all examinable because it is assumed knowledge from Paper F2. In practice those parts are very unlikely to be examined (but since it should be revision anyway it shouldn’t exactly consume much time 馃檪 )
There is a note written that online F2 MCQ TEST is to be attempted after learning chapter 6 in your note. Could you explain where I can find the test? Thank you for your lectures.
I’d like to commend you for your concise and clear explanations on Inventory Control. After listening your lectures I was able to answer the majority of questions in my BPP revision kit on this topic correctly.
Thank you so much for your sound lectures ..i really enjoyed it. My question is, why talking about the certainty of not running out of stock by calculation using maximum lead time and maximum demand when there is already buffer inventory? what is the essence of buffer then since this is a safety measures to ensure we do not run out of stock?
It depends on whether there is buffer inventory and the level of it. Carrying a buffer does reduce the chances of running out of inventory, but it does not automatically mean that we can never run out.
simranflora85says
hello sir, i wanted to make something clear. is these LIFO, FIFO and AVCO part of this chapter because it is there in the BPP book and therefore i was worried if it is part of the exams as well as the chapter and i have my exams coming Monday
No. FIFO and AVCO are dealt with in the F3 lectures on inventory (because they are in the syllabus for F3 also). LIFO is less important (but is in the syllabus) – at present however there is no lecture on LIFO.
To calculate the holding cost of inventory over a year.
Order quantity/2 is the average inventory throughout the year, ignoring any buffer inventory (which is what is usually the case in the exam). If there is buffer inventory, then the average inventory is higher by that amount throughout the year.
shenallie says
Question relating Labour
Qn : budgeted production for the next period is 4800 units, each unit requires 5 labour hours to make. Labour is paid 10 per hour. Idle time represents 20% of total labor. What is the budgeted labour cost for the next period??
John Moffat says
Please ask this in the Ask the Tutor Forum, and not as a comment on a lecture on inventory control.
endure says
Thank you so much!!! All lectures of this chapter are very clear; everything on OpenTuition is very clear. Again thanks a lot!
John Moffat says
Thank you for the comment 馃檪
jnwilson93 says
I’ve got a question regarding Examples 5 and 6 (The Re-order levels).
Lets say your EOQ requires you to place 12 orders a year. In this example, that would mean that your inventory is never above 400 units.
But then what if your inventory asks you to re-order at 500 units.
If we listen to our EOQ we will be in a situation where we’re going to be out of stock, but if we listen to our re-order level calculations, we’re spending extra unnecessary money on stock holding costs.
So i guess my question is:
1) which of these costs is more acceptable (Loss of sales vs increased stock holding cost)
2) Does this matter in the exam?
jnwilson93 says
Sorry, I was just reading this back and my example is bad – But I’m essentially asking what happens when there’s a conflict between the EOQ and the Re-order quantity.
Is this likely to happen? and what do we do when there is a conflict?
John Moffat says
They are two separate things, and there is no conflict.
The EOQ is always calculated in the normal way. If we know exactly what the demand over the lead time is, then we will place a new order at that level. If the demand over the lead time is uncertain, then to be safe we will place a new order at the highest level of demand. As a result we will be carrying buffer/safety inventory all the time of the excess of the maximum demand over the average demand over the lead time. It won’t affect the EOQ itself.
luunhat6788 says
Thank you very much, sir!
John Moffat says
You are welcome 馃檪
taxedout says
Hi there,
First of all thank you for offering these lecture notes. I think parts c and d (here) need removing from the lectures listed for F9 as this is causing some confusion and looking at previous comments they are not examinable for F9 and not included in the F9 notes, Thanks
John Moffat says
Inventory control is one small bit of the syllabus. All the other lectures are specific to F9.
haroondar74 says
Mr. John
Excellent lectures but still not clear why parts c and d lectures relevant notes are not included. If they are not examinable for F9 and not included in the F9 notes, then why we are consuming time on these lectures.
Regards
Haroon.
John Moffat says
In theory it is all examinable because it is assumed knowledge from Paper F2. In practice those parts are very unlikely to be examined (but since it should be revision anyway it shouldn’t exactly consume much time 馃檪 )
haroondar74 says
Thanks….Your lectures are best for part time students like me.
John Moffat says
Thank you for your comment 馃檪
joychoi says
Hi Mr. Moffat,
There is a note written that online F2 MCQ TEST is to be attempted after learning chapter 6 in your note.
Could you explain where I can find the test?
Thank you for your lectures.
Regards,
Jeonghye Choi
John Moffat says
The online practice tests are linked from the main Paper F2 page.
Kerron says
Hi Mr. Moffat,
I’d like to commend you for your concise and clear explanations on Inventory Control. After listening your lectures I was able to answer the majority of questions in my BPP revision kit on this topic correctly.
Regards,
Kerron Duncan
John Moffat says
Thank you for the comment 馃檪
iyamu says
Thank you so much for your sound lectures ..i really enjoyed it. My question is, why talking about the certainty of not running out of stock by calculation using maximum lead time and maximum demand when there is already buffer inventory? what is the essence of buffer then since this is a safety measures to ensure we do not run out of stock?
Kind regards.
John Moffat says
It depends on whether there is buffer inventory and the level of it.
Carrying a buffer does reduce the chances of running out of inventory, but it does not automatically mean that we can never run out.
simranflora85 says
hello sir, i wanted to make something clear. is these LIFO, FIFO and AVCO part of this chapter because it is there in the BPP book and therefore i was worried if it is part of the exams as well as the chapter and i have my exams coming Monday
John Moffat says
No. FIFO and AVCO are dealt with in the F3 lectures on inventory (because they are in the syllabus for F3 also). LIFO is less important (but is in the syllabus) – at present however there is no lecture on LIFO.
simranflora85 says
ohh thank you so much..and the lectures are brilliant..really helping me put with my study! 馃榾
John Moffat says
I am pleased that the lectures are helping you 馃檪
John Moffat says
To calculate the holding cost of inventory over a year.
Order quantity/2 is the average inventory throughout the year, ignoring any buffer inventory (which is what is usually the case in the exam). If there is buffer inventory, then the average inventory is higher by that amount throughout the year.
catherine says
well understood.
thank you very much sir.
catherine says
hello,
please help me on the following questions.
1.what is the difference between buffer inventory and safety inventory?
2.what is the formula for finding average inventory?
tx
John Moffat says
1. Buffer inventory and safety inventory and different words for the same thing (buffer = safety)
2. The average inventory is (order quantity/2) plus any safety/buffer inventory.
catherine says
thank you sir.
one more question please
when is this formula used? ‘(buffer inventory + order quantity/2)*holding cost per unit’.