Question

In a given market, aggregate demand is given by QD = 840 - 40 P and...

In a given market, aggregate demand is given by

QD = 840 - 40 P

and aggregate supply is given by

QS = 10 P - 60

Then at the equilibrium price and quantity, total surplus is

A. 1800
B. 900
C. 450
D. 225
0 0
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Answer #1

Producer surplus at equilibrium price is the area below equilibrium price and above the supply curve. Consumer surplus at equilibrium price is the area below the demand curve and above equilibrium price. Total surplus = consumer surplus + producer surplus.

Denand p 840-40 P 840-40P 1o0-G 5o P 900 8 ce SUPPU 2 1 18 Demand I20 二 180 - 120

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