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Finding Short-Run and Long-Run Equilibrium  A market initially has...

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Finding Short-Run and Long-Run Equilibrium  A market initially has...

Finding Short-Run and Long-Run Equilibrium 
A market initially has N=20 firms each with identical costs C(q)=0.25q2+100. 
Demand is QD=1600-40p. 
Assume a constant cost industry. 
(a) Find the short-run market supply

 

ANS. (a) Each firm chooses q where MC=p  0 .5q=p  q=2p 
With N=20, QS=20(2p)=40p

 

please explain the answer why   0.5q=p then q=2p 

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Answered by srvpragya on coursehero.com
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