Supply and Demand Model

Schedules and Curves

Market for ice cream

Price (per lb.) / Quantity Demanded (in lbs.) / Quantity Supplied (in lbs.)
$10 / 3,500 / 8,500
$9 / 4,000 / 8,000
$8 / 4,500 / 7,500
$7 / 5,000 / 7,000
$6 / 5,500 / 6,500
$5 / 6,000 / 6,000
$4 / 6,500 / 5,500
$3 / 7,000 / 5,000
$2 / 7,500 / 4,500
$1 / 8,000 / 4,000


Market for ice cream

  • What is the equilibrium price of ice cream?
  • What are the quantities demanded and supplied of ice cream at the equilibrium price?
  • What would happen to the demand of ice cream during summer? And during winter?
  • What would happen to the supply of ice cream if milk increases in price?
  • What would happen to the quantity demanded of ice cream if the selling price rises from $4 per pound to $5 per pound?
  • What would happen to the quantity supplied of ice cream if the selling price rises from $5 per pound to $6 per pound?
  • What would happen to the demand of ice cream if we win the lottery?
  • What would happen to the supply of ice cream if a faster milk freezer is developed?
  • What would happen to the demand of ice cream if the price of chocolate syrup increases?
  • What would happen to the supply of ice cream if a new ice cream parlor opens up in town?
  • What would happen to the demand of ice cream today if we know there will be a sale special next weekend?
  • What would happen to the demand of ice cream if the price of frozen yogurt decreases?
  • What type of imbalance do we have in the market for ice cream if the market price is $7 /lb.?
  • By what amount?
  • How can it be solved?
  • What type of imbalance do we have in the market for ice cream if the market price is $3 /lb.?
  • By what amount?
  • How can it be solved?

Supply and Demand Model

Scenarios

Determine:

1-Whether supply (or quantity supplied) or demand (or quantity demanded) is affected

2-The sign of the change (increase / rise or decrease / fall)

3-The effect on equilibrium price and equilibrium quantity

Market forScenario

  • Personal computersAnnouncement that computer chip prices will fall sharply next year
  • Skiing equipmentDecrease in ski-lift tickets
  • Diet drinksDiscovery that saccharine in high doses causes cancer
  • Orange juiceHurricane Hugo hits South Florida
  • BeefReports of mad cow disease
  • ChickenReports of mad cow disease
  • Soy beansGenetic engineering of a new seed that endures low temperatures
  • CoffeeDemand for cocaine increases and cocaine price doubles
  • Video storesCable TV stations multiply and cable subscription price lowers
  • PizzaPrice of beer rises
  • PizzaPrice of Chinese food falls
  • PizzaPrice of pizza sauce rises
  • U-haulsBeginning of the semester at IWU
  • U-haulsEnd of the semester at IWU
  • ConvertiblesPopulation gets older
  • Parking spotsIt's between 8:00AM and 9:00AM
  • Parking spotsIt's between 5:00PM and 6:00PM
  • Parking spotsLibrary construction is finished
  • RosesValentine's day approaches
  • VHS VCRsInvention of the recording DVD player
  • ComputersInvention of the superconductor processor