Q d= 20- 2P
Qs = 4p -10
(1)
In equilibrium, Qd = Qs.
20 - 2P = 4P - 10
6P = 30
P = $5
Q = 20 - (2 x 5) = 20 - 10 = 10
(2)
Ed = (dQd/dP) x (P/Qd) = -2 x (5/10) = -1
Es = (dQs/dP) x (P/Qs) = 4 x (5/10) = 2
(3)
Tax burden of buyers = Es / (Ed** + Es) = 2 / (1 + 2) = 2 / 3 = 0.67 = $1 x 0.67 = $0.67
Tax burden of sellers = Ed** / (Ed** + Es) = 1 / (1 + 2) = 1 / 3 = 0.33 = $1 x 0.33 = $0.33
**Absolute value of elasticity of demand is considered.
(4)
The $1 tax will increase effective price paid by buyers, which will decrease demand. New demand function will be
Qd = 20 - 2(P + 1) = 20 - 2P - 2 = 18 - 2P
Equating with Qs,
18 - 2P = 4P - 10
6P = 28
P = $4.67 (Price received by sellers)
Price paid by buyers = $4.67 + $1 = $5.67
Q = (4 x 4.67) - 10 = 18.68 - 10 = 8.68
(5)
DWL = (1/2) x Unit tax x Change in quantity = (1/2) x $1 x (10 - 8.68) = $0.5 x 1.32 = $0.66
NOTE: As per Answering Policy, 1st 5 parts are answered.
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