In: Economics
For a small country called Boxland, the equation of the domestic demand curve for cardboard is Q D = 200 − 2P , where Q D represents the domestic quantity of cardboard demanded, in tons, and P represents the price of a ton of cardboard. For Boxland, the equation of the domestic supply curve for cardboard is Q S = -60 + 3P , where Q S represents the domestic quantity of cardboard supplied, in tons, and P again represents the price of a ton of cardboard.
Q D = 200 − 2P
Q S = -60 + 3P
So at equilibrium , Qd = Qs
200 - 2P = -60 + 3P
260 = 5P
P = 52
Hence equilibrium price is $52 .
Quantity = 200 - 2(52)
Quantity = 200 - 104
Quantity = 96 units