수다닷컴

a market consists of two population segments, a and b.
- an individual in segment a has demand for your product: qa = 1 - p.
- an individual in segment b has demand for your product: qb = 2 - 2*p.
- each segment has 1000 people in it.
- marginal cost is zero.
- fixed cost is zero.
a) assume that you can tell which segment each individual belongs to, and you can use two-part tariff. design two different two-part tariffs, one for segment a, and one for segment b. what are the fixed fees and per unit prices for these two two-part tariffs? what are the corresponding profits from each segment?
b) assume that you cannot tell which segment each individual belongs to, and you can use two-part tariff. design two different two-part tariffs, one for segment a, and one for segment b. assume that the per unit price for segment a is 0.5. what is the fixed fee for the light user? what are the per unit price and fixed fee for segment b? what are the corresponding profits from each segment?
이에 따른 답으로는
(a) for segment a: fa = 0.5, pa= 0,
for segment b: fb = 1, pb = 0,
profits from segment a = 0.5*1000 = 500.
profits from segment b = 1*1000 = $1000.b)
two-part tariff for segment a: fa = 1/8 pa = ½
two-part tariff for segment b: fb = 7/8 pb = 0
note that consumers in segment b are indifferent between these two two-part tariffs (or prefer
tariff b if we add one cent to fa). consumers in segment a prefers two-part tariff a. therefore,
consumers self-select and choose the plan that is designed for each of them.
profits from segment a is 1000*(1/8) + ½*0.5*1000
profits from segment b is 1000*(7/8).
total profits = 1000*(1/8) + ½*0.5*1000 + 1000*(7/8) = $1250.뭐가뭔지 하나도 모르겠네요 ㅠㅠ

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