Consider the market for coffee beans. Suppose that the prices of all other caffeinated beverages
go up 30 percent while at the same time a new fertilizer boosts production at coffee plantations
dramatically. Can you tell what will happen to the equilibrium price? What about the equilibrium
quantity?
Due to price increase, the demand will decrease as other customers may see the budget is beyond their income. However, the boost in production will further increase the supply. Increase in supply as well as demand decrease makes the equilibrium price to fall however the impact on the equilibrium quantity may not be determined.
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