Answer:
Equilibrium quantity: 145
Equilibrium price: $140
Step-by-step explanation:
In order to find the answer, first we determine the current difference between quantity supplied and quantity demanded.
Quantity supplied - quantity demanded = difference
125 - 165 = -40
So we have a shortage of -40 units.
We have the information that a $1 increase in price increases supply by 2, and decreases demand by 2. Thus, in order to close the shortage, we need a $10 price increase, because this will raise supply by 20 units, and lower demand by 20 units as well, bringing the 40 gap to 0.
For this reason, the equilibrium quantity is 145 units, and the equilibrium price is $140.