THREE APPLICATIONS OF SUPPLY DEMAND AND ELASTICITY

Can good news for farming be bad news for farmer? Why did OPEC fail to keep the price of oil high? Does drug interdiction increase or decrease drugreleted crime. At first these questions might seem to have little in common. Yet all three questions are about markets and all markets are subject to the forces of supply and demand. Here we apply the versatile tools of supply demand and elasticity to answer these seemingly complex questions.

Can Good News for Farming Be Bad News for Farmers ?

Let’s return to the question posed at the beginning of this chapter. What happens to wheat farmers and the market for wheat when university agronomists discover a new wheat hybrid that is more productive than existing varieties? Recall from Chapter 4 that we answer such questions in there steps. First we examine whether the supply or demand curve shifts. Second we consider which direction the curve shifts. Third we use the supply and demand diagram to see how the market equilibrium changes.

In this case the discovery of the new hybrid affects the supply curve. Because the hybrid increases the amount of wheat that can be produced on each acre of land farmers are now willing to supply more wheat at any given price. In other words the supply curve shifts to the right. The demand curve remains the same because consumers desire to buy wheat products at any given price is not affected by the introduction is a hybrid. When the supply curve shifts from to the quantity of wheat sold increases from 100 to 110 and the price of wheat falls from $3 to $2.

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RENT CONTROL IN THE SHORT RUN AND LONG RUN

One common example of a price ceiling is rent control. In many cities the local government places a ceiling on rents that landlords may charge their tenants. The goal of this policy is to help the poor by making housing more affordable. Economists often criticize rent control arguing that it is a highly inefficient way to help the poor raise their standard of living. One economists called rent control the best way to destroy city other than bombing. The adverse effects of rent control are less apparent to the general population because these effects occur over many years. In the short run landlords have a fixed number of apartments to rent and they cannot adjust this number quickly as market conditions change. Moreover the number of people searching for housing in a city may not be highly responsive to rents in the short run because people take time to adjust their housing arrangements. Therefore the short-run supply and demand for housing are relatively inelasti...

Why Did OPEC Fail to Keep the Price of Oil High

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Elasticity and Tax Incidence

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Does Drug Interdiction Increase or Decrease Drug-Related Crime

A persistent problem facing our society is the use of illegal drugs such as heroin cocaine, ecstasy and crack. Drug use has several adverse effects. One is that drug dependence can ruin the lives of drug users and their families. Another is that drug addicts often turn to robbery and other violent crimes to obtain the money needed to support their habit. To discourage the use of illegal drugs the U,S, government devotes billions of dollars each year to reduce the flow of drug into the country. Let’s use the tools of supply and demand to examine this policy of drug interdiction. Suppose the government increase the number of federal agents devoted to the war o drugs. What happens in the market for illegal drugs? As is usual, we answer this question in three steps. First we consider whether the supply or demand curve shifts. Second we consider the direction of the shift. Third we see how the shift affects the equilibrium price and quantity. Although the purpose of ...

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CAN CONGRESS DISTRIBUTE THE BURDEN OF PAYROLL TAX

If you have ever received a paycheck you probably noticed that taxes were deducted from the amount you earned. One ot these taxes is called FICA an acronym for the Federal Insurance Contribution Act. The federal government uses the revenue from the FICA tax pay for Social Security and Medicare the income support and healthcare programs for the elderly. FICA is an example of a payroll tax which is a tax on the wages that firms pay their workers. In 2005 the total FICA tax for the typical worker was of earnings. Who do you think bears the burden of this payroll tax firms or workers. When Congress passed this legislation it tried to mandate a division of the tax burden. According to the law half of the tax is paid by firms and half is paid by workers. That is half of the tax is paid out of firms revenues and half is deducted from workers paychecks. The amount that shows up as a deduction on your pay stup is the worker contribution. Our analysis of tax incidenc...

The Variety of Demand Curves

Economists classify demand curves according to their elasticity. Demand is elastic when elaelsticity is greater than 1, so that quantity moves proprotionately more than the price. Demand is inelastic when the elasticity is less than 1, so that quantity moves proprotionately less than the price. If the elasticity is exactly 1, so that quantity moves the same amount proprotionately as price demand to have unit elasticity. Because the price elasticity of demand measures how much quantity demanded responds to change in the price, it is closely related to the slope of the demand curve. The following rule of thumb is a useful guide. The flatter the demand curve that passes through a given point the greater the price elasticity of demand. The steeper the demand curve that passes through a given point, the smaller the price elasticity of demand. In the extreme case of a zero elasticity, shown in panel demand is perfectly inelastic and the demand curve is vertical. In thi...

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