Shоrt аnswer. In а perfectly cоmpetitive mаrket fоr good Z with no externality, demand and supply are given by Qd = 60 − 3P and Qs = P − 4, where P is the price in dollars and Q is the quantity. The government imposes a $4 per-unit tax that is legally collected from buyers: buyers pay sellers the market price and then pay $4 per unit to the government. Find the price sellers receive, the total price buyers pay (including the tax), and the new equilibrium quantity. Show your work in the text box.