You are the owner/manager of a small competitive firm that
manufactures house paints. You and all your 1,000 competitors have
total cost curves given by
TC = 63 + 7Q + 7Q2
and the industry is in long-run equilibrium.
Now you are approached by an inventor who holds a patent on a
process that will reduce your costs by 20% at each level of
output.
a. What is the most you would be willing to pay for the exclusive
right to use this invention?
b. Would the inventor be willing to sell at that price?
Industry is in long run equilibrium. It means P=LRATC
ATC= TC/Q= 63/Q+7+7Q
dATC/dQ= - 63/Q^2+7=0
63/7=Q^2
Q= 3
P= LRATC= 63/3+7+7*3=21+7+21= 49
Find Q by using P= 49 and TCnew= 20%*TC=TC/5= 63/5+7Q/5+7Q^2/5
MC=dTCnew/dQ= 7/5+ 14Q/5
P=MR=MC
49=7/5+ 14Q/5
49*5=7+14Q
Q=238/14
Qnew= 17
profit with Qnew=
TR=P*Qnew= 49*17=833
TC= 63/5+7*17/5+7*(17)^2/5= 12.6+23.8+404.6= 441
Profit= TR-TC= 833-441=$392
a. The most you would be willing to pay for this exclusive right= $392
b. No, the inventor will not be willing to sell as it can sell to more than one firm.
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