[SOLVED] Economics MBA profit maximisation toffee


by jackievdberg
Tags: economics, maximisation, profit, solved, toffee
jackievdberg
jackievdberg is offline
#1
Aug28-07, 01:37 AM
P: 3
Hi Guys
I have a total blonde moment here :
The question goes :

I need to determine the profit maximising equilibrium output,price and total profit under 2 conditions
a) firm is monopolist b ) perfect competition ( I have the theory on these )

where a firm Produces output at cost of : C = 50 + 20 X
and sells at price P= 220 - 4 X

I started with X ( being any ) and made my colomns , now I am daft - I cannot get the Total cost , Average cost ext to get to the correct profits ????
Should I have used ( X ) as only 1 extra unit , 2 extra units ext or can I still do 10 units , 20 units?
I confused myself here totally.I would appreciate another few brains.
Thank You Thank You
Jackie
Phys.Org News Partner Science news on Phys.org
NASA's space station Robonaut finally getting legs
Free the seed: OSSI nurtures growing plants without patent barriers
Going nuts? Turkey looks to pistachios to heat new eco-city
CRGreathouse
CRGreathouse is offline
#2
Aug28-07, 11:57 AM
Sci Advisor
HW Helper
P: 3,680
Profit is maximized when the cost to produce an extra unit is equal to the price it is sold at.
EnumaElish
EnumaElish is offline
#3
Aug28-07, 12:29 PM
Sci Advisor
HW Helper
EnumaElish's Avatar
P: 2,483
You can go with 10, 20, but the answer won't be as accurate.

In Excel, just tabulate P and C for X = 1, ..., 55. (Do you see why you don't need to go over 55?)

For Monopoly, calculate profit as revenue - cost. I am assuming you can calculate a revenue from price (P) and quantity (X) at each level of X. Profit should be maximized when the change in revenue is equal to the change in cost for an extra unit. (That's CRGreathouse's intuition applied to a monopoly.)

For perfect competition, find the X at which price equals the additional cost of producing X units instead of X-1 units. Can you see what that additional cost is when you look at the formula for C?

For monopoly, the "exact" solution (in fractional units) necessitates use of calculus (derivatives).

jackievdberg
jackievdberg is offline
#4
Aug29-07, 01:43 AM
P: 3

[SOLVED] Economics MBA profit maximisation toffee


Thank you very much.It helped me tremendously. I could see where I went wrong.
I appreciate helpful people like you !
God bless.
selvgov
selvgov is offline
#5
Sep16-07, 08:14 AM
P: 1
Hi

Can you please elaborate on the calculation for perfect competition. I still do not get the additional cost. Thank you so much.
EnumaElish
EnumaElish is offline
#6
Sep16-07, 04:09 PM
Sci Advisor
HW Helper
EnumaElish's Avatar
P: 2,483
Just do the calculation. What is C when X = x? What is C when X = x+1?
jackievdberg
jackievdberg is offline
#7
Sep17-07, 12:49 AM
P: 3
Thank you again,I managed.
I would need help later on with Quantitative methods.
Can I pose questions as I study the equations ?
My email is jackie@mso.co.za
Thanks for sharing your knowledge to help others !
Jackie
EnumaElish
EnumaElish is offline
#8
Sep17-07, 09:34 AM
Sci Advisor
HW Helper
EnumaElish's Avatar
P: 2,483
Quote Quote by jackievdberg View Post
Thank you again,I managed.
I would need help later on with Quantitative methods.
Can I pose questions as I study the equations ?
My email is jackie@mso.co.za
Thanks for sharing your knowledge to help others !
Jackie
You may pose all "homework type" questions in forums "precalc math" or "calc & beyond" (as appropriate).

Any open-ended, discussion-type questions should be posed under the appropriate science forum.
batlhalefi
batlhalefi is offline
#9
Nov18-07, 01:41 AM
P: 1
Quote Quote by EnumaElish View Post
Just do the calculation. What is C when X = x? What is C when X = x+1?
what isthe price andtoal profit of a monopolistwhen p=220-4x and cost =50+22x?


Register to reply

Related Discussions
[SOLVED] Cobb-Douglas functions in economics Biology, Chemistry & Other Homework 1
[SOLVED] maximisation problem Linear & Abstract Algebra 0
Economics Max profit question Calculus & Beyond Homework 4
Profit Equation (need to maximze profit) Calculus 2
Profit Equation (need to maximize profit) General Math 11