Solution:
i.). At equilibrium: Qd = Qs
38 – 3P = P + 2
38 – 2 = P + 3P
36 = 4P
P = 9
Equilibrium Price = 9
Substitute in the demand function to derive Quantity:
Qd = 38 – 3P
Qd = 38 – 3(9)
Qd = 38 – 27 = 11
Equilibrium quantity = 11
ii.). Rewrite the demand and supply equations as follows:
Demand function: P = "\\frac{38}{3} - \\frac{Q}{3}"
Supply function: P = Q – 2
New supply function after addition of RM2 tax: P = Q – 2 + 2
Set equal the demand and supply functions:
"\\frac{38}{3} - \\frac{Q}{3}" = Q – 2 + 2
Q = 9.5
New equilibrium Quantity = 9.5
Substitute to derive the price:
P = "\\frac{38}{3} - \\frac{9.5}{3}" = 9.5
Equilibrium Price = 9.5
iii.). The new graph showing the movement of equilibrium price and quantity before and after tax is as follows:
iv.). Consumer tax burden = (9.5 – 9) x 9.5 = 0.5 x 9 = 4.75
Consumer tax burden = RM4.75
Producer tax burden = (2 – 0.5) x 9.5 = 1.5 x 9.5 = 13.5
Producer tax burden = RM13.5
The producer will absorb most of the tax burden.
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