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May 12, 2021 at 7:58 pm
Also, while resolving the 1st part of example 3, (through equation), it doesn’t giving the result that arrived through tabluar format. I am putting the values as:
P=16.5 – 0.0005(100) = 16.45
What i am doing wrong in equation since tabular result gives 32 (as per the method you used in the video).
John Moffat says
May 13, 2021 at 8:49 am
I have no idea what you are trying to do, or why.
The PED is the % change in the demand divided by the % change in the selling price. What you seem to be doing is certainly not doing that!
May 12, 2021 at 5:36 pm
Dear John, while resolving the 2nd part of example 3, where the question requires to resolve where selling price is $15 per unit. However, the answer comes using your method is 7.500. However, in free notes, the answer is given as 10. I tried tons of times but the answer doesn’t arrive 10.
May 14, 2021 at 8:52 am
I have absolutely no idea how you are arriving at 7.500. The answer is 10 and the workings are shown in the answer.
April 1, 2021 at 5:57 am
When discussing elasticity we ignore the negative sign. Is there a reason for that ? What would a negative 32 indicate compared to a positive 32 ?
April 1, 2021 at 8:29 am
We don’t bother with the sign because we know it will always be negative. A higher selling price is not going to result in higher demand is it? 🙂
September 27, 2020 at 6:33 pm
Thank you so much, Sir. I really enjoyed your lecture. May God bless you with a good health!
September 28, 2020 at 8:21 am
Thank you for your comment 🙂
December 27, 2019 at 4:41 pm
What is the answer for the PED for $15?
December 28, 2019 at 11:32 am
The answer is in the free lecture notes (along with the answers to all of the examples)!! You can find the answers by checking the contents page.
September 10, 2019 at 7:00 pm
Firstly thank you for the great lecture.
I have a question about the price elasticity of demand. At the very last bit of the lecture, PED marked as -32. You told that the price is very elastic to the changes in price as a slight drop in price resulted in 100% increase in demand. I understand this and makes sense. But why my study book says PED > 1 indicates elastic demand. Here we have a minus PED so doesn’t that mean inelastic demand?
September 11, 2019 at 6:22 am
When discussing elasticity we ignore the minus sign 🙂
September 28, 2019 at 7:58 pm
Thank you so much John, I watched the video again and made my revision. I love your lectures, very helpful and easy to follow.
August 23, 2019 at 12:10 pm
First of all many thanks for all these lectures!
One question I had is that in your notes you mention that the optimum selling price is where MR=MC.
So in our example, would it be fair to say that 15 is not the actual optimum selling price as MR still > than MC so it would be slightly less that 15 and of course higher that 14,5 so around 14,8 let’s say?
August 23, 2019 at 2:16 pm
Yes, you are correct. However when the question is tabular as in this example, you have to assume that the only possible selling prices are those given in the question (and therefore 14.8 would not be possible).
You will see in the next lecture that there can also be questions where any selling price is allowable in which case we use equations and do find the exact price at which MR = MC.
August 27, 2019 at 11:41 am
Understood and thank you very much for your reply sir!
February 27, 2019 at 10:53 am
Nedi: you are welcome 🙂
February 26, 2019 at 8:10 pm
Ok I get it now. Thank u so much!
February 25, 2019 at 5:32 am
Nedi: I do explain this in the next lecture on pricing. It is because the only selling prices ‘allowed’ in this example are those stated in the question.
February 24, 2019 at 4:45 pm
In the notes. it says that optimum selling price occurs at the point where MC=MR. It is a bit confusing because based on the example, MC is not equal to MR at optimum selling price of $15p.u . Can you elaborate on this? thanks
November 16, 2018 at 6:14 pm
sir, your lectures are just amazing….
January 13, 2019 at 10:42 am
October 22, 2018 at 11:14 am
Thanks John. Good presentation and straightforward. This approach shows the relationship between price and demand and the effect on profit. The optimum SP is the price that maximize profit or where MR=MC. If MR is greater than MC then it is worth selling the product and if MC is greater than MR then it is not worth selling it. The PED is well explained and simply to understand.
October 22, 2018 at 4:24 pm
September 1, 2018 at 7:23 am
please do example 3 – second question- I don’t understand the answer in the notes based on selling price $15
September 1, 2018 at 10:02 am
You will have to say which bit of the answer in the notes that you are not clear about, because the approach at $15 is exactly the same as the approach I work through in the lecture at $16.
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