Let's think about the market for air travel. From August 2014 to January 2015, the price of jet

step 1 Once again, welcome to a new problem. This time we're looking at issues connected to economics.

Let's think about the market for air travel. From August...

Key Concepts

Market Equilibrium

Market equilibrium is the point in a market where the quantity demanded by consumers equals the quantity supplied by producers. This concept is central in understanding how the price and quantity of goods or services are determined under normal market conditions. Changes in the market, such as shifts in supply or demand, lead to a new equilibrium state with different price and quantity levels.

Supply Curve Shift Due to Input Cost Changes

Input cost changes, such as a decrease in fuel prices, affect the production costs of companies. Lower input costs reduce the cost of providing a service or good, leading producers to offer more at every price level. This is reflected in a rightward shift of the supply curve, which generally results in a lower equilibrium price and a higher equilibrium quantity in the market.

Economic Shock Analysis Using a Four-Step Framework

The four-step analysis framework is a systematic approach to studying how external shocks affect market outcomes. It involves: 1) identifying the relevant market and its initial equilibrium; 2) determining the nature of the shock; 3) analyzing the effects on the supply and/or demand curves; and 4) calculating the new equilibrium. This method helps economists clearly predict how changes like a significant drop in jet fuel prices impact the overall market.

Transcript

00:05 Once again, welcome to a new problem.

00:08 This time we're looking at issues connected to economics.

00:14 And anytime you talk about economics, there's always supply and demand.

00:21 So if i have a graph with the x and the y axis, of course the x axis, we're not going to call it just the x axis, but we're going to call it quantity.

00:33 And then we also have the y -axis, which we're going to call price.

00:40 So there's a relationship between quantity and price.

00:44 In terms of demand, as the prices go down, you can see the demand increases.

00:52 And then as the prices go down, you see, or rather as prices go up, as you increase the prices, you see that the supply increases.

01:03 So there's an inverse relationship.

01:05 Between demand and supply in the sense that price, an increase in price leads to a decrease in demand or quantity demanded of a product.

01:21 An increase in price, on the other hand, is attractive to suppliers, so it's going to lead to an increase in supply.

01:29 And that's why the demand graph is downward sloping and the supply graph is upward sloping.

01:36 Our goal in this particular problem is that jet fuel prices decreased.

01:48 So they went down, jet fuel prices decreased by about 47%.

01:57 That's almost like a 50 % drop in prices.

02:01 And so we want to use a four -step analysis process.

02:05 To determine what's going to happen to the equilibrium prize and equilibrium price and equilibrium quantity so of course you're reducing the price of something and that's going to affect equilibrium price and quantity so think about this position right here as the equilibrium price and then think about this position right here as the equilibrium quantity.

02:43 So we want to see what happens if you decrease jet fuel prices.

02:49 So jet fuel influences.

03:01 Jet fuel obviously is going to influence the cost of production.

03:08 Influences cost of production.

03:11 And the cost of production in this.

03:16 Sense is air travel.

03:23 So if you decrease jet fuel, obviously you're going to decrease the cost of air travel.

03:38 That's what's going to happen.

03:40 Cost of production of producing air travel goes down.

03:44 So that means it's going to affect supply.

03:50 Supply of jet fuel increased.

03:58 Increases, increases, since it's cheaper to produce jet fuel.