In the market for a good the quantity supplied $\left( {{Q_S}} \right)$ and the quantity demanded $\left( {{Q_D}} \right)$ are given by ${Q_S} = P-30$ and ${Q_D} = 240-2P$ where P = price in dollars.
A change in the tax on the good makes ${Q_S} = P-36$.
How will the change affect equilibrium price?
1 )
It will fall by $2.
2 )
It will fall by $6.
It will rise by $2.
4 )
It will rise by $6.
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