Shifts in Demand and Supply for Goods and Services

Problems

Table shows information on the demand and supply for bicycles, where the quantities of bicycles are measured in thousands.

Price Qd Qs
$120 50 36
$150 40 40
$180 32 48
$210 28 56
$240 24 70
  1. What is the quantity demanded and the quantity supplied at a price of $210?
  2. At what price is the quantity supplied equal to 48,000?
  3. Graph the demand and supply curve for bicycles. How can you determine the equilibrium price and quantity from the graph? How can you determine the equilibrium price and quantity from the table? What are the equilibrium price and equilibrium quantity?
  4. If the price was $120, what would the quantities demanded and supplied be? Would a shortage or surplus exist? If so, how large would the shortage or surplus be?

The computer market in recent years has seen many more computers sell at much lower prices. What shift in demand or supply is most likely to explain this outcome? Sketch a demand and supply diagram and explain your reasoning for each.

  1. A rise in demand
  2. A fall in demand
  3. A rise in supply
  4. A fall in supply