1. Suppose that the market for bananas in Ithaca on an average weekday is given by the following equations:
demand: P = 120 – Q
supply: P = 30 + 2Q
where P is the price of a bushel in dollars and Q is the quantity in bushels.
a. What is the equilibrium price and quantity? Show graphically
b. Assume that the National Institutes of Health issues a study showing that bananas reduce the risk of cancer. The demand for bananas increases to:
demand’: P = 150 - Q
At the original equilibrium price, is there a shortage or a surplus? Of how much?
c. What is the new equilibrium price and quantity? Show graphically.
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