1. A monopoly is facing an inverse demand curve that is p=200-5q. There is no fixed cost and the marginal cost of production is given and it is equal to 50.
2. Consider a competitive market with short run demand and supply of p=200-Q/1000000 and p=Q/1000000. There is a firm in this market with a MC=q for q>50.
3. Fill all the blank cells in the following table.
(1)
(a)
TR = p x q = 200q - 5q2
(b)
MR = dTR/dq = 200 - 10q
(c)
From demand function, when q = 0, p = 200 (vertical intercept) & when p = 0, q = 200/5 = 40 (horizontal intercept).
From MR function, when q = 0, MR = 200 (vertical intercept) & when MR = 0, q = 200/10 = 20 (horizontal intercept).
(d)
Profit is maximized when MR = MC.
200 - 10q = 50
10q = 150
q = 15
(e)
p = 200 - 5 x 15 = 200 - 75 = 125
(f)
TC = MC x q = 50 x 15 = 750
TC = p x q = 125 x 15 = 1875
Profit = TR - TC = 1875 - 750 = 1125
(g)
In efficient outcome, p = MC.
200 - 5q = 50
5q = 150
q = 30
p = MC = 50
Deadweight loss = (1/2) x Difference in p x Difference in q = (1/2) x (125 - 50) x (30 - 15) = (1/2) x 75 x 15 = 562.5
NOTE: As HOMEWORKLIB Answering Policy, 1st question has been answered.
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