Elasticity of Demand and Supply Flashcards
Demand
The quantity of a good/service consumers are willing and able to buy of a given price in a given time period.
Law of Demand
There is an inverse relationship between price and quantity demanded. As price increases, Quantity of demand decreases and vice versa.
What is Supply?
The quantity of a good/service producers are willing and able to produce at a given price in a given time period.
Law of Supply
There is a direct relationship between price and quantity supplied. As price increases, Quantity of Supply increases and vice versa.
What is PED?
Measures the responsiveness of quantity demanded given a change in price.
Equation for PED?
%Change in quantity demanded / % change in price
Equation for change in?
Difference/ Original x 100
is PED always positive or negative?
always negative. The price elasticity of demand is ordinarily negative because quantity demanded falls when price rises, as described by the “law of demand”.
If PED is more than 1 what does it mean?
Demand is price elastic
If PED is less than 1 what does it mean?
demand is price inelastic
If PED is =0 what does it mean?
perfectly price inelastic
If PED is infinite what does it mean?
perfectly price elastic
If PED is 1 what does it mean?
demand is unit price elastic
What is price elastic supply ?
Measures the responsiveness of quantity supplied given a change in price.
equation for PES?
%change in quantity of supply/ %change in price
is PES always positive ?
yes because this is because the change in price and quantity are either both positive or both negative. If price goes up, quantity supplied goes up; if price goes down, quantity supplied goes down too.