Suppose the country of Microlandia initially free trades with the rest of the world in bananas at the world price of $1000 per ton of bananas. The domestic demand for bananas in Microlandia is QD = 60000 – 15p and the domestic supply is QS = 10p. If the government of Microlandia imposes a tariff of $500 per ton of banana imports, calculate the tariff revenue and the DWL from the tariff.
Answer
Qd=60000-15P
Qs=10P
world price=1000
tariff=500
world price + tariff=1500
at world price
Qd=60000-15*1000=45000
Qs=10*1000=10000
at world price + tariff
Qd=37500
Qs=15000
after tariff
Import=Qd-Qs=37500-15000=22500
Tax revenue=import*tariff=22500*500=11250000
DWL=0.5*500*(5000)+0.5*500*(45000-37500)
=3125000
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