Question

A monopolist has two specific demanders with demand equations: A = 10-p and B = 10 -2p. This monopolist implements an optimal
Refer to Figure 1. Consider a single-price monopoly. In situation (s), where s is either a, borc, the monopolist can operate
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Answer #1

Part 1) We have the following information

Average Cost (AC) = Marginal Cost (MC) = 2

Fixed fees = a

Uniform price for each unit consumed = p

Ideally we want to capture the entire consumer surplus. Consumers have the most surplus when Price = MC (the lowest price at which producer will still offer the good). In this case, if one charges 2 per unit, Consumer A would purchase

qA = 10 – p

qA = 10 – 2

qA = 8

and Consumer B would purchase

qB = 10 – 2p

qB = 10 – (2 × 2)

qB = 10 – 4

qB = 6

Price A Consumes A Consumer B 1o * Consumer Surplus umer Surplus > 10 Quantity She

The consumer surpluses (CS) would be

CS of A = ½ × 8 × 8

CS of A = 32

If the monopolist charges the Consumer A 32 for the right to consume the good, then the monopolist will "break even" when Consumer A purchases the good at 2 for each unit. So, the consumer A will purchase the product and at the same time the monopolist would get the entire consumer surplus.

CS of B = ½ × 3 × 6

CS of B = 9

If the monopolist charges the Consumer B 9 for the right to consume the good, then the monopolist will "break even" when Consumer B purchases the good at 2 for each unit. So, the consumer B will purchase the product and at the same time the monopolist would get the entire consumer surplus.

Profit from Consumer A = Total Revenue (TR) – Total Cost (TC)

TR from A = Fees for the right + (Price × Quantity)

TR from A = 32 + (2 × 8)

TR from A = 32 + 16

TR from A = 48

TC = 2qA = 2 × 8 = 16

Profit from Consumer A = 48 – 16

Profit from Consumer A = 32

Profit from Consumer B = Total Revenue (TR) – Total Cost (TC)

TR from B = Fees for the right + (Price × Quantity)

TR from B = 9 + (2 × 6)

TR from B = 9 + 12

TR from B = 21

TC = 2qA = 2 × 6 = 12

Profit from Consumer B = 21 – 12

Profit from Consumer B = 9

Total Profit = 32 + 9 = 41

Part 2) Diagram B represents the situation where the monopolist can operate only at a long-term loss and will decline to serve the market. This is because in diagram b the price of the monopolist is lower than the average cost.

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