Transcript How_to_get_12_marks_in_supply_and_demand_question.ppt

Past paper questions
2005
Explain what could cause the demand for, and supply of, cinema
tickets to change over time. With the help of diagrams, show how
these changes would affect the price and sales of cinema tickets
2006
Explain what could cause the demand for, and supply of, petrol to
change over time. With the help of diagrams, show how these changes
would affect the price and sales of petrol.
2007
Concerts, films and TV programmes are all available on DVDs. Explain
what would cause the demand for, and supply of, DVDs to change over
time. With the help of diagrams, explain how these changes would
affect the price and quantity of DVDs sold.
2008
Explain what could cause the demand for and supply of new cars to
change over time. With the help of diagrams, explain how these
changes would affect the price and sales of new cars.
Draw four
diagrams
How to get full marks
A
Price
Equilibrium Point
B
Price
S
S
P2
P1
D1
Q1 Q2
C
D2
P1
P2
D2
Quantity
Q2 Q1
D Price
Price
S1
S2
P1
P2
D1
Quantity
S2
S1
P2
P1
D
Q1 Q2
Quantity
D
Q2 Q1
Quantity
For each diagram
Just state
this
In diagram 1 demand has shifted to the right from
D1 to D2
Two reasons
for each
diagram
This could be because of an increase in the price
of a substitute such as public transport. It could
also be because of a decrease in income tax which
would give people a larger disposable income.
Forget this
and you get
a maximum
of 8 out of
12
This will cause price to increase from P1 to P2 and
will also cause quantity to increase from Q1 to Q2
as seen in diagram A