On a popular air route, an airline offers two classes of service: business class (B) and economy class (E). The respective inverse demands are given by
PB = 540 - 0.5QB and PE = 380 - QE.
Because of ticketing regulations, business passengers cannot take advantage of economy’s low fares.
Each flight has a capacity of 200 passengers, The cost per full flight is $20,000, so you may assume the marginal cost per passenger is $100.
1. Write down the optimization problem this airline is faced with. Set it up as an unconstrained optimization problem with two variables.
2. Write down the first order condition(s).
3. Solve the first order condition(s) to find out the optimal number of flights.
4. Write down the second order condition(s) and check whether it/they is/are satisfied.
Consider the scenario of the previous problem. Because of regulations, the airline has to operate two flights daily.
5. Write down the optimization problem faced by this firm as a constrained optimization problem with two variables.
6. Write down the first order condition(s).
7. What fares should the airline charge, and how many passengers will buy tickets of each type?
8. Write down the second order condition(s) and check whether it/they is/are satisfied
(1)
Profit = TRB + TRE - TC
Z = PB x QB + PE x QE - MC x (QB + QE)
Z = 540QB - 0.5QB2 + 380QE - QE2 - 100 x (QB +QE)
Z = 540QB - 0.5QB2 + 380QE - QE2 - 100QB - 100QE
Z = 440QB - 0.5QB2 + 280QE - QE2
Optimization problem is:
Maximize Z = 440QB - 0.5QB2 + 280QE - QE2
Subject to: QB >=0, QE >= 0
(2)
FOC are:
Z/QB = 0 and
Z/QE = 0
(3)
Z/QB = 440 - QB = 0
QB = 440
PB = 540 - 0.5 x 440 = 540 - 220 = 320
And
Z/QE = 280 - 2QE = 0
2QE = 280
QE = 140
PE = 380 - 140 = 240
(4)
SOC are:
2Z/QB2 < 0 and 2Z/QE2 < 0.
2Z/QB2 = - 1 < 0
2Z/QE2 = - 2 < 0
So SOC are satisfied.
NOTE: As per HOMEWORKLIB POLICY, 1st 4 parts are answered.
On a popular air route, an airline offers two classes of service: business class (B) and...
On a popular air route, an airline offers two classes of service: business class (B) and economy class (E). The respective inverse demands are given by PB = 540 - 0.5QB and PE = 380 - QE. Because of ticketing regulations, business passengers cannot take advantage of economy’s low fares. Each flight has a capacity of 200 passengers, The cost per full flight is $20,000, so you may assume the marginal cost per passenger is $100. Consider the scenario...
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