How to Calculate Producer Surplus and Consumer Surplus from Supply and Demand Equations | Think Econ

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  • Опубліковано 3 гру 2024
  • In this video we explain how you can calculate Producer Surplus and Consumer Surplus step-by-step, starting with nothing but the supply and demand equations! We go over an algebraic solution to show you exactly how to calculate consumer and producer surplus given the demand and supply equations!
    This channel is just getting started so if you enjoyed the content, let us know by liking, commenting, sharing, and subscribing to the channel; it really helps us out. ALOT. We release weekly videos covering all things ECONOMICS!
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КОМЕНТАРІ • 158

  • @ThinkEcon
    @ThinkEcon  2 роки тому +49

    If you found this video helpful, consider supporting the channel by liking the video and subscribing to the channel to see more content like this! :)

    • @mphomadisha4215
      @mphomadisha4215 Рік тому +3

      It literally made CS and PS simple wow, thanks. I need deadweight loss

    • @ThinkEcon
      @ThinkEcon  Рік тому +2

      Glad to hear it! Here’s our deadweight loss video; ua-cam.com/video/_p2RlWgc0jU/v-deo.html

    • @olebengmokhatu5904
      @olebengmokhatu5904 Рік тому +1

      Dead weight loss

    • @ThinkEcon
      @ThinkEcon  Рік тому +1

      @@olebengmokhatu5904 Check out our Deadweight Loss video here: ua-cam.com/video/_p2RlWgc0jU/v-deo.html

  • @adeebhaider844
    @adeebhaider844 5 днів тому +1

    Your way of teaching is so great, i really understand everything.

    • @ThinkEcon
      @ThinkEcon  4 дні тому

      I’m really glad to hear that! :)

  • @ibrahimathar1033
    @ibrahimathar1033 Рік тому +14

    thank you so much man, have an exam tomorrow morning and this came in clutch

    • @ThinkEcon
      @ThinkEcon  Рік тому +1

      Glad to hear it! Good luck on the exam!

  • @hurenbegatterhans-jorg1476
    @hurenbegatterhans-jorg1476 2 дні тому

    This was such a simple and straightfoward explanation, thank you:)

  • @alassanemagassouba9420
    @alassanemagassouba9420 Рік тому +19

    thank you so much; your explanations are so effective and easy to understand

    • @ThinkEcon
      @ThinkEcon  Рік тому +2

      You're very welcome! I'm really glad to hear that :)

  • @hungnguyen-gs3oe
    @hungnguyen-gs3oe Рік тому +9

    thank a lot sir, you just saved my life.

  • @freezymedia883
    @freezymedia883 Рік тому +5

    Typing from Africa specifically zambia you have just helped me do my assignment

  • @avtomerebashvili8145
    @avtomerebashvili8145 7 місяців тому +4

    thanks for that simpliest explanation, u saved me

    • @ThinkEcon
      @ThinkEcon  7 місяців тому +1

      Glad I could help! :)

  • @corigarcia4864
    @corigarcia4864 Місяць тому +3

    too good, better than my uni profs, love love love love thank you

    • @ThinkEcon
      @ThinkEcon  Місяць тому +1

      I’m glad I could help! ☺️

  • @HibaHussain-w4i
    @HibaHussain-w4i 24 дні тому +1

    Thank you so much! I'm prepping for an exam and this really helped me!

    • @ThinkEcon
      @ThinkEcon  24 дні тому +1

      I’m glad to hear it! Good luck on your exam!

  • @A4JIT
    @A4JIT 8 днів тому +1

    the video is so helpful man i have economics exam today

  • @greenwaddledee1743
    @greenwaddledee1743 5 місяців тому +6

    Good luck on your exams yall

  • @ooglyrat7010
    @ooglyrat7010 10 місяців тому +2

    You saved my life honest to god 🙏🏻

    • @ThinkEcon
      @ThinkEcon  10 місяців тому +1

      Glad you found the video helpful! :)

  • @KunaiKrazy
    @KunaiKrazy 5 місяців тому +1

    To be honest, I didn't have the most recent version of a textbook for my Energy Economics class so I had no examples to go off of. All other tutorials, including CHATGPT did not mention finding the 0 value, 54 value, and made no mention of finding the difference between the 54 and the 18 value and then Basexheight/2. Thank you so much for this. I think I will go get the book because it should not have taken me this long.

    • @ThinkEcon
      @ThinkEcon  5 місяців тому +3

      I feel like most textbooks don't even go over that in much detail, which is a shame. We take a lot as given and I'm glad I was able to provide a truly step-by-step solution to walk you through it! You got this!

  • @kikoferras7369
    @kikoferras7369 11 місяців тому +2

    God Bless you for this.

  • @owenthomas3621
    @owenthomas3621 2 роки тому +9

    Great video

  • @abrahimshorbtli9714
    @abrahimshorbtli9714 8 місяців тому +2

    Amazing explanation thank you sir 🧠

    • @ThinkEcon
      @ThinkEcon  8 місяців тому +1

      You're very welcome!

  • @capoags2438
    @capoags2438 Рік тому +2

    thank you so much, your explanations are so effective and easy to understand sir

  • @cemilkolgu6579
    @cemilkolgu6579 Рік тому +3

    You are the best sir, thank you.

  • @priyanshukr.sharma2697
    @priyanshukr.sharma2697 10 місяців тому +1

    this is really one of te finest explanation literally the best one

    • @ThinkEcon
      @ThinkEcon  10 місяців тому +1

      I appreciate the compliment! Glad you found it helpful! :)

  • @tylerchristensen7456
    @tylerchristensen7456 Місяць тому

    It finally makes sense, thank you

  • @stevemcgroob4446
    @stevemcgroob4446 2 місяці тому

    Dude you're a life saver. 🙏

  • @Pianodaddyy
    @Pianodaddyy Рік тому +4

    Liked and Subscribed! Thank you for your help!!!

  • @AuthenticallyAlysiaa
    @AuthenticallyAlysiaa 5 місяців тому +1

    SOOOO HELPFUL 😢😢. THANK YOU

    • @ThinkEcon
      @ThinkEcon  5 місяців тому +1

      You're welcome! I'm glad you found it helpful!

  • @akbotatoktarbekova2701
    @akbotatoktarbekova2701 6 місяців тому +1

    thank you! loved it, so simple

    • @ThinkEcon
      @ThinkEcon  6 місяців тому +1

      I’m glad you found it helpful!

  • @upsingh751
    @upsingh751 8 місяців тому +1

    superb sir ji. love from india

    • @ThinkEcon
      @ThinkEcon  8 місяців тому +1

      Glad you enjoyed!

  • @xay8336
    @xay8336 5 місяців тому +3

    Sir, where did you got the number '270' & '5P'? please help

    • @ThinkEcon
      @ThinkEcon  5 місяців тому +2

      Q = 270 - 5P is the equation for the demand curve. Most of the time the specific demand equation will be given in the question.

    • @BookFurnace
      @BookFurnace 6 днів тому

      It's just arbitrary numbers for this example.

  • @KhimKhan
    @KhimKhan 10 місяців тому +2

    Wow 10q man! keep it up 🎉🎉

  • @moseswamunyima3962
    @moseswamunyima3962 6 місяців тому +2

    Wow, you make it look easy! Thank you

    • @ThinkEcon
      @ThinkEcon  6 місяців тому +1

      I’m happy to hear that. You’re very welcome! ☺️

  • @TenzinNorbuLama-n9n
    @TenzinNorbuLama-n9n Рік тому +3

    Thank you for clear explanations. liked and subscribed already :)

    • @ThinkEcon
      @ThinkEcon  Рік тому +2

      I’m glad you enjoyed the video! :)

  • @peacekeeper-apexlegends9294
    @peacekeeper-apexlegends9294 Рік тому +10

    Thank you so much! If you don't mind, how do I go about it if my demand and supply functions are different?
    If they look like this:
    Demand function: P(Q) = 5-0,0000001Q
    Supply function: P(Q) = 0,0000001Q
    I found the equilibrium price and quantity by putting both functions equal to each other, and then solving. And then the other was found by inputting the new value into one of the original functions just like you did. I got Equilibrium price = 2,5 and quantity = 25000000
    My question is, how do I find where the demand function crosses the X and Y axis? There is no P in my function, so I'm a little bit confused.

    • @ThinkEcon
      @ThinkEcon  Рік тому +4

      So what you've got is something called the inverse demand function. Instead of Q on the left side of the equation, it's P. For calculating the X and Y intercepts, you just set P and Q equal to zero one at a time, and solve for the other value.
      Does this help?

    • @peacekeeper-apexlegends9294
      @peacekeeper-apexlegends9294 Рік тому +1

      @@ThinkEcon Oh I see, thank you very much!! So for the demand function, I would basically be able to straight out read the y-intercept from this type of function by looking at the first number, in this case 5 right? Since the other part in the function would always result in 0?

    • @ThinkEcon
      @ThinkEcon  Рік тому +3

      @@peacekeeper-apexlegends9294 yes, that’s exactly correct! In fact, the inverse demand function is already in y = mx + b form, ready to be graphed (like you said). The regular demand equation is actually not what you’re graphing since it interprets the dependent variable (y variable) as Q instead of P. They’re the exact same equations, just rearranged!

    • @peacekeeper-apexlegends9294
      @peacekeeper-apexlegends9294 Рік тому +1

      @@ThinkEcon Appreciate it thank you, earned a sub! Your content have helped me out so much!

    • @ThinkEcon
      @ThinkEcon  Рік тому +2

      @@peacekeeper-apexlegends9294 I’m glad it’s been helpful, and appreciate the kind words :)

  • @sherikawilliams7868
    @sherikawilliams7868 Місяць тому

    Does the demand ad supply equation changes constantly? For in a previosu video you had a different equation for it which was Qd = 100- 3P and Qs= 2P + 20

  • @tahseentasneem3296
    @tahseentasneem3296 5 місяців тому +1

    Thank you so much ❤it was very helpful ❤

    • @ThinkEcon
      @ThinkEcon  4 місяці тому +2

      You're very welcome!

  • @Debbie2004-x9q
    @Debbie2004-x9q 5 місяців тому

    This is amazing. I understood it very well 🎉🎉🎉

  • @utkukrky698
    @utkukrky698 Рік тому +2

    Thanksss ❤

  • @phindarishasohlang910
    @phindarishasohlang910 Рік тому +4

    Please calculate consumer surplus and producer surplus using integration

  • @reepoponne
    @reepoponne Рік тому +1

    Amazing video
    Thank you

  • @izzybellz5346
    @izzybellz5346 7 місяців тому +1

    ❤ love your videos, very helpful..

    • @ThinkEcon
      @ThinkEcon  7 місяців тому +1

      I'm really glad to hear that! :)

  • @Mudenda_M
    @Mudenda_M 7 місяців тому +1

    This is great👍🏾😃

  • @victoriasepiashvili
    @victoriasepiashvili Рік тому +2

    Amazing video ❤

  • @Siyasat1
    @Siyasat1 Рік тому +1

    Thank you !!

  • @luckytenygeay4968
    @luckytenygeay4968 Рік тому +1

    Thanks u
    I learn something

    • @ThinkEcon
      @ThinkEcon  Рік тому

      You're welcome! I'm glad to hear that!

  • @ahmedbusiness4702
    @ahmedbusiness4702 6 місяців тому +1

    Very good ❤

  • @vishwarana8698
    @vishwarana8698 Рік тому +1

    Please share video for tax subsidies and quotas on supply n demand curve calculations
    😊

  • @Onlineclass.101
    @Onlineclass.101 Рік тому +1

    you saved my life.

  • @carlanavarrofernandez5021
    @carlanavarrofernandez5021 Рік тому +3

    amazing video

  • @abdihakimibrahim-so6dl
    @abdihakimibrahim-so6dl 4 місяці тому +1

    Well done

  • @calmingarts2932
    @calmingarts2932 7 місяців тому +1

    What is meant by consumer and producer surplus in the market equilibrium graph? Why would you need to use the area of a triangle in order to work out the producer and consumer surplus? Thank you.

    • @ThinkEcon
      @ThinkEcon  7 місяців тому +1

      The idea is that consumer surplus is all of the value the consumers receive from purchasing something that was cheaper than their "reservation price" or the maximum they're willing to spend on the good. The triangle formed under the demand curve and above the equilibrium price represents that amount. The lower the price, the bigger the triangle, and therefore the bigger the consumer surplus, since consumers save more money.
      The exact opposite is true on the supply side. Producers benefit more from a high price, and so as the price goes up, producer surplus increases.
      I hope this helps :)

    • @calmingarts2932
      @calmingarts2932 7 місяців тому

      @@ThinkEcon Thank you 😊

  • @outstanding8240
    @outstanding8240 Рік тому +2

    HI, the 270 and the 10 are random values that the professor has added or it is the actual base formula?

    • @ThinkEcon
      @ThinkEcon  Рік тому +2

      Those are the actual values in this particular example. They will change question to question

    • @delealabi1866
      @delealabi1866 Рік тому +2

      I was bemused as to how the figures just materialized. Thanks for clearing this. @@ThinkEcon

    • @ThinkEcon
      @ThinkEcon  Рік тому +1

      My pleasure! Every question's figures will be different, but to show you the math involved, I did need to include values of my own!
      @@delealabi1866

  • @ryanantoun6887
    @ryanantoun6887 Рік тому +2

    are Qd = 270 -5p and Qs = 10P equations used for every single problem?

    • @ThinkEcon
      @ThinkEcon  Рік тому +2

      Great question! No, each question will have different Qd and Qs equations. They are known as the Demand and Supply Equations and represent the lines you see on a standard Supply and Demand graph! I just used these equations for the example but the steps will work for any Qd and Qs equations

  • @tomascorreia7055
    @tomascorreia7055 Рік тому +1

    could you explain the theory behind CS being above market price and below demand function and PS below market price and above supply function?

    • @ThinkEcon
      @ThinkEcon  11 місяців тому +4

      Absolutely. It has to do with a consumer's willingness to pay and a producer's willingness to sell.
      If you're willing to pay $20 for a t-shirt but only have to pay $5, then your consumer surplus is $15 in savings. Now on the supply and demand graph is area would be the triangle below the demand curve and above the equilibrium price of $5. This means that ANYONE with a willingness to pay above $5 receives a benefit, no matter if their willingness to pay was $6 or $600.
      On the producer side, imagine you're willing to sell a good as cheap as $10, but equilibrium price is $50. Then your producer surplus is $40. ANY seller whose willingness to sell is under $50 will experience producer surplus. On the graph this is the area below the selling price and above the supply curve.
      I hope this helps, if not, let me know and I can try to explain it even more clearly!

  • @MandilakheGqwangu
    @MandilakheGqwangu Рік тому +1

    thank you sir 🙌👏

  • @basiloriokot
    @basiloriokot Рік тому

    Thankyou for the knowledge

  • @yahk3
    @yahk3 Рік тому +1

    Very useful

  • @abdallaabdullahi5942
    @abdallaabdullahi5942 Рік тому +2

    thank you

  • @vihanga193
    @vihanga193 Рік тому

    so clear thanks

  • @mankwongng185
    @mankwongng185 9 місяців тому +1

    very useful !

    • @ThinkEcon
      @ThinkEcon  9 місяців тому +1

      Glad to hear it!

  • @consultcmb
    @consultcmb Рік тому +3

    Can the supply curve start from any number apart from 0?

    • @ThinkEcon
      @ThinkEcon  Рік тому +2

      Yes. Remember, as supply curve will often take on the linear form y = mx + b where m is the slope, and b is the y intercept. Any time b is a non-zero integer, the supply curve will start apart from zero!

  • @ampiireliz
    @ampiireliz Рік тому +1

    Thank you❤

  • @alishaadhikari6108
    @alishaadhikari6108 Рік тому +1

    thank you so much

  • @charitychiwalo3140
    @charitychiwalo3140 2 дні тому

    thank you somuch

  • @Kermitsbgc
    @Kermitsbgc Рік тому +47

    i don't know who needs to hear this, but chatgpt will help you study and explain math for you

    • @Makbowman
      @Makbowman 10 місяців тому +18

      Don’t trust it. Especially if you have variables like Pb*, it doesn’t understand them well and confuses you more. I corrected ChatGPT many times and it ‘apologized’ for its mistakes

    • @engravedwithelegance3651
      @engravedwithelegance3651 9 місяців тому

      It sure does

    • @aaaaaaaaaaaaaaaa7498
      @aaaaaaaaaaaaaaaa7498 9 місяців тому

      Inaccurate

    • @AlbertChanda-oy9m
      @AlbertChanda-oy9m 8 місяців тому

      ✔️​@@aaaaaaaaaaaaaaaa7498

    • @jaredcobbett6951
      @jaredcobbett6951 6 місяців тому +1

      @@Makbowmanthat’s amazing it apologises 😂

  • @syedhasanakbarzaidi
    @syedhasanakbarzaidi 29 днів тому

    Amazing

  • @eatloaf
    @eatloaf Рік тому +1

    Great content but i noticed that the question i have here is quite different yours; qs= p=2q/3 + 1 and qd= p=10_2q how do i approach this please?

    • @ThinkEcon
      @ThinkEcon  Рік тому +5

      First things first. You’re working with something called the INVERSE demand and supply equations. This is where P is isolated and Q is in the equation instead of the other way around. Luckily for you, solving requires the same steps, so at equilibrium both price AND quantity are equal. In your case, you would set the P equations equal to each other and solve for Q. Once you have Q, sub it back into either the inverse supply or inverse demand equation to get equilibrium P. Does this help?

  • @vidurasampath8688
    @vidurasampath8688 Рік тому +1

    Thanks 🇱🇰

  • @francereale86
    @francereale86 2 роки тому +1

    gotcha!

  • @syndafloden333
    @syndafloden333 Рік тому

    ure a god man

  • @mirzaseyab6206
    @mirzaseyab6206 10 місяців тому

    What about if demand and supply curves are not lines ? If they are quadratic...

  • @munachinweze3694
    @munachinweze3694 Рік тому

    How did you get the figures that you used for quantity supplied and quantity demanded

    • @ThinkEcon
      @ThinkEcon  Рік тому +2

      The supply and demand equations, you mean? They’ll always be given to you, or at the very least, be given as a one-step problem

  • @dulshansenadheera3084
    @dulshansenadheera3084 Рік тому +1

    Thanks for the video..

  • @JosephineMulenga-ol4nt
    @JosephineMulenga-ol4nt Рік тому

    How is the base of the producer's supply becoming 80?

  • @dollytearz
    @dollytearz 2 місяці тому +1

    how did u get 18 from 280= 15P

    • @ThinkEcon
      @ThinkEcon  2 місяці тому +1

      I believe you mean 270 = 15P.
      You get 18 by dividing 15 from both sides of the equation!

    • @creedancebird270
      @creedancebird270 2 місяці тому

      Where did you get 15p from?

  • @MbooMwanangombe
    @MbooMwanangombe 9 місяців тому

    Exallent

  • @HumairaFaiz-xq5ze
    @HumairaFaiz-xq5ze 2 дні тому

    ❤❤❤

  • @AlbertChanda-oy9m
    @AlbertChanda-oy9m 8 місяців тому +1

  • @derickdoh2526
    @derickdoh2526 Рік тому +2

    Hi Can You Help Me Find The Consumer Surplus At A Price Of $10 Given The Equations Qd=20-P and Qs= P ?

    • @ThinkEcon
      @ThinkEcon  Рік тому +1

      Of course!
      P= $10
      Equilibrium Q = 10
      Find Y-intercept of demand curve:
      Set Qd = 0 and solve for P.
      0 = 20 - P
      P = 20
      Therefore y-int is 20.
      Calculate area of the Consumer Surplus triangle:
      CS = (b*h)/2
      CS = (10*10)/2
      CS = 100/2
      CS = $50
      Hope this helps!

    • @derickdoh2526
      @derickdoh2526 Рік тому

      @@ThinkEcon Okay. I've Got Another One. Qd=30-P
      Qs=2P
      Find The Consumer Surplus At A Price Of $15

  • @AnafaEmmanuel
    @AnafaEmmanuel 14 днів тому

    Where is the 18 coming from

  • @muhammadfaizinramadhantara5597
    @muhammadfaizinramadhantara5597 3 місяці тому

    rizky fawwaz pernah belajar disini

  • @MrTIPTOE415
    @MrTIPTOE415 10 місяців тому

    How did P become 18

    • @BI-km6dl
      @BI-km6dl 7 місяців тому

      It managed to live an additional year after its 17th birthday.

    • @timothysichone4109
      @timothysichone4109 6 місяців тому

      He divided it by 15

  • @tharangiwattuhewa1782
    @tharangiwattuhewa1782 8 місяців тому +1

    Thank you

  • @Agyeb965
    @Agyeb965 Місяць тому

    Thanks a lot

  • @andrewakr7205
    @andrewakr7205 Рік тому

    Thank you!

  • @aminjdir9369
    @aminjdir9369 27 днів тому +1

    Thank you

    • @ThinkEcon
      @ThinkEcon  26 днів тому +1

      You're very welcome!