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Questions tagged [supply-and-demand]

Supply and Demand is an economic model of price determination in a market. Demand refers to how much (quantity) of a product or service is desired by buyers. Supply represents how much the market can offer.

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Deducing price elasticity of demand without price and quantity

How can the answers for these 3 questions in the link be deduced if no information is given about the price and quantity? P and Q are required to work out PED, XPED and YED. So I don't quite get how ...
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Why is demand curve always going down?

In many economic charts with demand and supply curve, people often say the demand curve goes down with more quantity. But I will give you a really practical example, why I think they are wrong. ...
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Why hasn't the huge increase in supply provided by Airbnb decreased prices?

Simple supply and demand economics would suggest that the huge increase in the supply of rooms to rent by Airbnb should have reduced the price of rental significantly in those cities where Airbnb is ...
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Trying to understand ceiling in supply and demand on picture

I am having one problem, which I do not understand. Let's assume the government applies ceiling price below the equilibrium price. I colored it red in my graphs. Of course, supply would decrease, ...
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Will the third Heathrow runway fill up within 25 years?

From a Wired article published 9 June 2018 about the proposed third Heathrow Airport runway: But Warnock-Smith1 warns that Heathrow will eventually fill up again unless air travel is redistributed ...
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1answer
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WARP implies completeness, transitivity and thus rationalizability. What is wrong with the statement?

Let $A$ be a menu and $R$ be a complete and transitive binary relation. Define choice correspondence generated by $R$: $$c_R(A)=\{x\in A|| xRy \ \forall y\in A\}.$$ Theorem (from Kreps 1988): for ...
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33 views

If aggregate demand and supply do not have a specific value, what is the point of the formula?

I have been learning about aggregate supply and demand. I have just read this answer which states: "Aggregate supply is a relationship of price level and output. It is a function, or a curve, or a ...
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45 views

Supply curve for a competitive firm with constant MC

I know that for a perfectly competitive firm, the supply curve is given by $p=MC \ge AVC$, where $AVC$ is the average variable cost. Now I get really confused when the $MC$ comes out to be a constant....
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Perfectly competitive constant MC Questions [closed]

If I have a market in which I have constant MC, no fixed costs, and perfect competition- when would it make sense for a new firm to enter the market(granted they have the same technology)? Would I ...
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10 views

Macro economics drivers in supply chain

I am working on building a sentiment indicator for companies and investors in the supply chain. I am looking for interesting research on the macroeconomic drivers in the global supply chain (...
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1answer
34 views

Which impact would have to introduce 15 times more soy in the worldwide prices of soy?

Soy is a commoditie and the main export of Argentina. It's said Argentina has 40 millions of hectareas of arable land and it produces food for 400 million persons and that potentially could make food ...
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1answer
36 views

Predicting Shifts in Supply and Demand for Loanable Funds

I know the answer is A.  but I need an explanation on why. I thought government savings would decrease since they have less tax revenue, shifting savings left and interest rates up. I could see how ...
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23 views

Getting a market supply curve from firm supply curve

PFA the image below. As there are n firms in the market, and a tax of t moves up the cost curves of an individual firm by t units, shouldn't the cost curve of the market move up by n*t units? If yes,...
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Economics of Selling Software

My understanding: Normally, selling a product has an increasing marginal cost per unit produced. Very often this increases more and more due to poor allocation of resources (diminishing returns). ...
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1answer
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Understanding what's in the frequently reported and discussed high demand in IT specialists in Germany - is the IT Fachkräftemangel real?

So far, I can observe the following contradictory evidences what I perceive from the media. Statement group #1. In the press, there are repeated reports from different sources about missing ...
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44 views

Does the reciprocal of the price elasticity of demand have an interpretation?

I have 2 related questions that i think are straightforward but am worried I have over-simplified! (i) Suppose the demand curve is downward sloping and the supply curve is upwards sloping. Suppose ...
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Supply/Demand Shift (Find New Equilibrium)

Starting: supply curve $y=x+10$ and demand curve $y = -x+30$ with equilibrium at (10, 20). The problem states that DEMAND shifts leftwards by 3 units and to find the new equilibrium. My professor did ...
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1answer
35 views

Demand Curve Price not perfectly elastic

I'm trying to make the argument that our Sales go up when prices for all our Products are 30% off. Which I believe should be our new Regular Price. but our Demand Curve doesn't support this. Should I ...
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Supply/Demand Curve Equation (beginner) [duplicate]

The linear demand function is $Q_D = a + b(P)$. I understand from this thread that it can be thought of as a simplification/magnification of the overall demand curve. Is there an equation that ...
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Building an square product-to-product table based on rectangular supply and use tables

I need a product-to-product input-output (I-O) table to conduct environmentally extended I-O analysis. I have supply and use tables at basic prices relating different industries and products, but ...
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1answer
65 views

Economics Behind the Insulin Shortage?

A lot of my family is concerned about a future insulin shortage and it's reported that this shortage is growing. When I read articles from Harvard about it, they imply it's pure greed: There are ...
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1answer
46 views

By what means does prices changes?

The classical supply and demand theory states that prices and quantities of a given good (in a perfectly competitive market) are determined by the supply and demand of that good, a shift in the demand ...
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AMD and Intel duopoly

What kind of duopoly competition model do these two companies "follow"? I'm doing a work in which I aim to analyze the economic outcomes after Intel's chip shortage in november 2018. Any links for a ...
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Origin of the saying “High prices are their own cure.”

Edwin Cannan (1915): An old epigram says that high prices are their own cure. Other variants of this "old epigram" include: High prices cure themselves (1911). High prices cure high prices ...
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1answer
82 views

Can Direct Taxes on the consumers have a impact on the Demand (rather than supply)?

I'm a 12th-grade student doing a school research paper evaluating the effectiveness of the recent increase in Additional Buyers Stamp Duty in the Singapore Housing market. This tax is directly imposed ...
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Supply elasticity on a piece-wise linear supply function

The supply elasticity at a point is the willingness to produce more or less after the price has changed (due to whatever reason?). $$\mu_{Q,P}=\frac{\partial Q_S/Q_S}{\partial P/P}=\frac{\partial Q_S}...
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Real world examples of supply curve shapes

I get the basic intuition that at higher prices, produces would be willing to produce more, but I feel like theory can only take my understanding so far. I want to know what are the real world ...
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34 views

Which utility function yields following demand $\alpha p^{\epsilon}$ [duplicate]

I am looking for a utility function that will lead to the following demand $$\alpha p^{\epsilon}$$. I know it is most likely a CES utility since the elasticity of demand is constant and this is ...
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1answer
24 views

Are there more historical examples of big change in prices thanks to demand/supply changes like the tulip mania?

I'm currently searching for historical changes in prices as a result of a big/sudden change in demand/supply, like the tulip mania in Holland. Are there any notable examples?
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Positive effects of a Tunisia-EU free trade agreement?

Tunisia might be signing a free trade agreement with the EU very soon. It's called ALECA or DCFTA. Many activists and labor unions are opposing such an agreement because it would result in losing ...
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1answer
37 views

Problem finding Demand Function

I am analyzing pricing for a new streaming service for a school project. My thought is to calculate the demand function of a player in the same industry and then calculate the optimal price. I am a ...
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1answer
137 views

Question on shifts in Supply and Demand Curves

I have a super basic question on the shift in supply and demand curves ( I haven't seen this stuff since high school). More generally, this is about solving systems of simultaneous equations. We have ...
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3answers
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If price increases and quantity remains the same can we infer that demand is perfectly inelastic?

My college tutor told me that demand for college admission at our institute is price inelastic. She says so, because, in the past 20 years, price of college education at our institute has increased, ...
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1answer
67 views

Is it right to derive social marginal benefit by adding individual prices instead of quantities?

I come across a lecture material on market functions and externalities that makes me quite confused. Here's the setup: Two stores are located next to each other. If one installs a camera system in ...
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2answers
858 views

Difference between Giffen and inferior goods. Why aren't all inferior goods Giffen goods?

What is the difference between an inferior good and a Giffen good? Are the two following definitions for an inferior good equivalent? Def 1: An inferior good is a good for which the demand decreases ...
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1answer
47 views

Flooding the real estate market with luxury homes: will average prices rise or fall?

If every middle class single-family detached home in a sprawling metropolitan area like Los Angeles were each replaced with two luxury condos over a short period, would average real estate prices rise ...
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What are “the fundamental categories of economics”?

I had an introductory class in marketing last week, and the professor wanted to test our previous knowledge of economics (we are juniors). He asked us this simple question: "What are the fundamental/...
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1answer
70 views

Market demand independent of distribution of income

If preferences are identical and homogeneous, then show that market demand for any good must be independent of the distribution of income. My workings are as follows: $$q^{d}(p)=\sum_{i=1}^{n}f(p_x,...
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343 views

Is there any formal definition of a relationship between resource availability and demand?

I do not have any background on economics. So my question might sound too simple and I hope it to be clear enough. I am curious about the following: Is there any formal definition of a relationship ...
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1answer
450 views

Supply curve when the marginal cost is zero

The supply curve is built as the average marginal cost (MC), when the MC is equal or higher than the average cost (AC) The marginal cost increases, as a result of the opposite effect of marginal ...
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1answer
710 views

Find optimal price from demand function?

I've been struggling with this for hours, trying to figure out how to solve this. "A perfectly competitive market has the marginal cost function, c (cost is C(y)=cy) and is facing the demand function:...
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1answer
59 views

Cross price elasticity of demand vs Price elasticity of demand

Is the cross price elasticity of demand between two goods always lower in magnitude than the price elasticities of demand of each good?
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1answer
90 views

Can marginal revenue be increasing?

As per my calculations, the derivative of the MR curve is given by: $MR'(q)=2p'(q)+qp''(q)$, where $p(q)$ is the inverse demand curve. Therefore,for a downward sloping demand curve, if the second ...
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1answer
536 views

Demand Curve Equation Explanation

I've been reading (trying to brush up on my economics knowledge) and came across the equation: $q_D = a + b(P)$. The variable $a$ is explained as "factors other than price affecting demand." I read ...
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Using capacity share instead of quantity market share in demand estimation (BLP)

If I were to use capacity share (as a proxy of quantity market share) in a demand estimation setup (such as BLP), are there ways to deal or interpret the measurement error? I would consider this ...
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2answers
28 views

A Question About The Laws Of Demand [duplicate]

The law of demand holds that ceteris paribis, a decrease of demand can be caused by an increase in price. However, it is also true that when demand decreases, the price will decrease, it will fall. ...
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3answers
205 views

Why can't the Land-Value Tax (in some cases) be passed on to tenants?

According to https://en.wikipedia.org/wiki/Land_value_tax: Because the supply of land is essentially fixed, land rents depend on what tenants are prepared to pay, That doesn't make any sense. If ...
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Does it make economic sense for only some universities in a certain area to pay their sports scholars?

Apparently ‘Athletic scholarships are common in the United States, but in many countries they are rare or non-existent.’ But are there countries where there are some universities that offer sports ...
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1answer
61 views

Why slope is constant in demand/supply curve?

I was reading Mankiw and it showed variation of demand/supply curve with external factors. However, in all the cases the curves only shifted but didn't change in shape. What I am wondering is why the ...
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5answers
729 views

Is Bill Gates wrong about supply demand curves?

In a recent tweet (Aug 14th, 2018, reproduced below), Bill Gates said that supply demand curves don't work for software because the first unit costs a lot and every unit after that is free. Isn't this ...