8. Marginal tax is 50%.
9. Individual estimations for PJ-1, PJ2 and PJ-3 are in the Figure 1.
Factors PJ-1 PJ-2 PJ-3
Fuel consumption (gallons/flight) 4000 3000 2000
Maintenance time(days per year) 40 30 20
Upgrading costs(dollars/year ) 100000 50000 16666.67
Capacity per plane 200 250 350
Passenger load factor 0.95 0.9 0.82
Number of one-way flights 300 320 335
Cost of purchasing(dollars) 15000000 20000000 30000000
Figure 1
Accounting data
Number of planes
Federal government regulatory agency requires the service of a minimum of 300000
passengers per year to allocate the route license. Thus, numbers of the PJ-2 and PJ-3 need
to be purchased are estimated as in Figure 2.
PJ-2 PJ-3
Capacity per plane 250 350
Passenger load factor 0.9 0.82
Number of one-way flights 320 335
Minimum requirement 300000 300000
Number of flights purchased 4.166667 3.120287
Actual number purchased 5 4
Figure 2
Ticket revenue
Assume the 5 PJ-2 aircraft and 4 PJ-3 aircraft have to be purchased to meet the
government requirement. Assume the ticket price remains the same regardless of which
plane is used. Revenue is calculated by the number of flights per plane number of planes
capacity per plane load factor ticket price. In option C, the load factor for PJ-1 drops from