Assume that demand for a commodity is represented by the equation           P=80−2Qd.P=80−2Qd. Supply is represented by the equation           P=−20+2Qs,P=−20+2Qs, where Qd and Qs are quantity demanded and quantity supplied, respectively, and P is price. Instructions: Round your answer for price to 2 decimal places and enter your answer for quantity as a whole number. Using the equilibrium condition Qs = Qd, solve the equations to determine equilibrium price and equilibrium quantity.

Macroeconomics
13th Edition
ISBN:9781337617390
Author:Roger A. Arnold
Publisher:Roger A. Arnold
Chapter3: Supply And Demand: Theory
Section: Chapter Questions
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ADVANCED ANALYSIS Assume that demand for a commodity is represented by the equation

          P=80−2Qd.P=80−2Qd.

Supply is represented by the equation

          P=−20+2Qs,P=−20+2Qs,

where Qd and Qs are quantity demanded and quantity supplied, respectively, and P is price.

Instructions: Round your answer for price to 2 decimal places and enter your answer for quantity as a whole number.


Using the equilibrium condition Qs = Qd, solve the equations to determine equilibrium price and equilibrium quantity.

Expert Solution
Step 1

Market equilibrium is the state where the quantity of a good or service demanded by consumers equals the quantity supplied by producers at a specific price. In other words, it is a state where there is no excess supply or excess demand.

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