In the supply-and-demand schedule shown above, the equilibrium price for portable music players is _____.
$100
$150
$250

Answer:
$150
Explanation:
Equilibrium price occurs at the point when the supply and demand of the product equals.
For example: Quantity of pens demanded in the market is 250, and Quantity supplied in the market is 250 as well.
With the same logic we can conclude that: At $150 the demand and supply of music players equals hence, it is the equilibrium price.