Find and graph the Post Tax Consumer Surplus,Producer Surplus,Tax Revenue, Dead Weight Loss, and the economic incidence of the Tax
Demand is P=21-2Q
Supply is P=Q
Tax is 4$ per unit
In the graph below, a tax of 4 per unit is imposed on sellers.
21 - 2Q = Q + 4
3Q = 17
Q = 5.67 and P(consumers) = 9.67 while P(sellers) = 5.67
Consumers are paying a tax of (9.67 - 7) = 2.67 while sellers are paying (7 - 5.67) = 1.33
Tax incidence falls on consumers by 67% and 33% on sellers.
These are the post-tax conditions in market
CS = area ABC = 0.5*(21 - 9.67)*5.67 = 32.1
PS = area DEF = 0.5*(5.67 - 0)*5.67 = 16.1
DWL = area BGE = 0.5*(7 - 5.67)*4 = 2.67
Tax revenue = 4*5.67 = 22.67
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