Economics cpt


This query is : Resolved 

(Querist)
11 October 2015 supply function...Q=-100+10p find elasticity when price is 15

12 October 2015 replace p with 15 and solve the equation.
Note the sign of 100 is negative.

Natalia Ali (Querist)
14 October 2015 I got p=15 q=50...... now what??? elasticity we need to find ....

14 October 2015 That's all and that's it.
That itself denotes the elasticity.

As P goes on taking different values, the q gets changed. That is elasticity.

Natalia Ali (Querist)
14 October 2015 see the answer is coming out to be 3..... this is ICAI ECO CPT book problem only..... but how

15 October 2015 when P gets changed by say 10%, Q gets changed by 30%. Hence elasticity is 30 divided by 10 i.e 3.

At P =15, Q is 50. Let us increase P by 10%
So?
At P= 15+20% of 15 = 18, Q becomes 80. This is 30% higher than the one we got earlier.

Natalia Ali (Querist)
15 October 2015 I don't get anything........... u r increasing price by 20%..?? y

16 October 2015 Thank you Natalia Ali. That was just a TRAP TEST to confirm that you are solving it by yourself. I am proud you got it right.

See it is like this.

Elasticity = % increase in Q divided by simultaneous % increase in P
= 60 divided by 20
=3

(Q gets increased by 60% i.e. from 50 to 80, when P gets increased by 20% i.e. from 15 to 18)

Now please try it for some other values of P, by yourself... and I am sure you get the same answer of 3 as elasticity.

Should you face any difficulty, please feel free to communicate

Natalia Ali (Querist)
16 October 2015 how would I know by what %age I have to increase quantity and price....... as here I told u the answer so u increased quantity & price by 60 & 30% but in xam what will I do

16 October 2015 oooooooOfffs.......

Please mind it very well that the formula to calculate the ELASTICITY is as follows. Plzzzzzzzzzzzzzzzzzzzzzz

Elasticity = delta Q / delta P

Please refer the following link for


https://www.youtube.com/watch?v=-2xh2Fz_XNo

Natalia Ali (Querist)
16 October 2015 OK thanks for helping

16 October 2015 And that is why economics is regarded as NORMATIVE. These are the ready made formula given to us. Thank god they are NOT asking us to find out these formula by first principles of DERIVATIVE.

So? Dont worry. Recite the formula and you can get the answer even under examination condition. All the best.

Natalia Ali (Querist)
16 October 2015 first principle of derivatives?????

16 October 2015 Yes. These are derivative functions. Formulae are derived using calculus. Ok?

Anyway, since you are inquisitive in your studies, let me ask you one more question.

have you come across with the revenue function of Y = mX + C ?


Natalia Ali (Querist)
16 October 2015 yeah y=income c=consumption m=smthng related to income

16 October 2015 hmmmmmmmmm... partially ok.

Y is income,
C is constant (as is called Fixed cost in Accountancy or Costing),
X is the number of units produced/sold (as the case may be).......

and then what is m? It is regarded as the SLOPE of the line.

If you are not bored, should I give you one more question?

Natalia Ali (Querist)
16 October 2015 see i'hv just passed 12th so give an easier 1 and r u CA??

17 October 2015 01. Since you are going through CPT books, I could guess that you are 12th pass.....

02. Yes, I am a chartered Accountant in practice. I have an MBA finance background as well. For past about 20 years, I am closely associated with various MBA institutes in Pune and Bengaluru as a visiting faculty for various subjects like Accountancy, Costing, Security analysis, Risk Management, Quantitative Techniques, Audit and so on..

03. Now my question to you is.... with the same exam,ple viz.
supply function...Q= -100+ 10P. Tell me the ELASTICITY when P is 20.

Natalia Ali (Querist)
19 October 2015 answer is 2

Natalia Ali (Querist)
19 October 2015 increased price by 40% to 28 from 20.....q becomes 180 increases by 80%

Natalia Ali (Querist)
19 October 2015 so it's not 3

21 October 2015 Good!
I think you are getting closer and closer to the concept of elasticity. Right?

Now please try to find it out for various values of P like say 12 and 25

(Compare these results with each other... that is of 12, 15, 20 and 25. And then get back to me with your observation about this comparison)

Natalia Ali (Querist)
21 October 2015 But u said answer will remain same as 3

21 October 2015 I never said that.

What i said was to mean that AT P=15, the answer will remain same..( for all the students.)


Now if you still have some curiosity left, try to compare the answers when P =12... 15... 20 and 25.

Natalia Ali (Querist)
21 October 2015 Now please try it for some other values of P, by yourself... and I am sure you get the same answer of 3 as elasticity...............what does it mean sir

21 October 2015 It means the deliberate TESTING question by suggestive and leading method.

You passed that test....many a students BLINDLY follow the answer. You did not do that. You solved it by yourself and came with correct answer ..of 2...

Congratulations.

And now try to compare the elasticity with different values of P and you will come to know the BASIC yet SIMPLE thing about elasticity. Bless you.


Natalia Ali (Querist)
21 October 2015 Thank u sir??

21 October 2015 as P is small, tending towards 10, the elasticity is MORE

As P starts travelling away from 10, the elasticity is LESS.

OR you can say as Price starts increasing, it becomes LESS elastic.

Natalia Ali (Querist)
21 October 2015 So its a case of necessary goods....whose consumption can't be reduced much.....or its a luxury good

21 October 2015 just refer this. Goodarticles, she has written.
https://www.yourarticlelibrary.com/economics/income-elasticity-of-demand-concept-meaning-and-determinants/10628/

https://www.yourarticlelibrary.com/economics/elasticity-as-demand/the-elasticity-of-demand-economics/24798/

Natalia Ali (Querist)
21 October 2015 Y....wats there in d link

21 October 2015 The author has beautifully explained the 2 terms.
Income elasticity and Demand elasticity.


Natalia Ali (Querist)
02 February 2017 thank for helping me through this ..I have cleared IPCC group 1 just day before yesterday and is preparing for group 2 thanks again

02 February 2017 Wow. Lovely.
Please accept my hearty congratulations.
Wish you a grand success in your next group.
Do study hard, keeping your inquisitiveness INTACT.
All the best.
For any query you may reach through my e mail id as well
amolshankar@gmail.com
amol@vpraca.com

Once again hearty congratulations.

Natalia Ali (Querist)
02 February 2017 thank u so much

03 February 2017 You are most welcome

Natalia Ali (Querist)
03 February 2018 hello sir hope you remember me! this time i really wanted to give you 'good news' but i failed twice in group 2. Please guide me what should be my approach while writing audit exam i scored 34 in that sub....

04 February 2018 oh.....so sorry to hear that.....
Audit proves out to be difficult when it comes to answer the question.
What I suggest would be "write down the answers given in suggested answers of ICAI" This will increase the understanding of intricacies of the answer. Give it a try.
You need to write down at least 5-6 papers...ok?


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