(a) P1 = 16 − Q1, so MR1 = TR1' = 16 - 2Q1,
P2 = 10 − 12Q2, so MR2 = 10 - 24Q2.
The equilibrium prices quantities under third degree price discrimination are:
MR1 = MC and MR2 = MC, so:
"16 - 2Q1 = 2,"
Q1 = 7 units,
"P1 = 16 - 7 = 9,"
"10 - 24Q2 = 2,"
Q2 = 1/3 unit,
"P2 = 10 - 12\u00d71\/3 = 6."
(b) If price discrimination is
not allowed (uniform pricing policy), the monopolist will set average price and quantity according to total demand and marginal revenue, so the second group will be worse off.
(c) In this case the government should tolerate price
discrimination.
(d) If the monopolist cannot discriminate between the two types of consumers and decides to apply a fixed tariff T and to charge a price p per unit sold, then the highest tariff the monopolist can charge is T = MC = 2.
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