SARM Airlines forecasted its average number of passengers in three different period. Average kilometers and average load factor for each period were estimated by SARM Airlines. The estimated values for passengers and target average load factors were provided in the following table.

Period	Average # of Passengers	Average Kilometers	Target Average Load Factor
1	50.000	4.000	70 %
2	110.000	5.000	90 %
3	80.000	3.500	80 %

SARM Airlines has 30 units of Boeing 737-600 aircraft, 40 units of Boeing 737-700 aircraft and 15 units of Airbus A321 aircraft. Their seats and kilometres were given below:

Aircraft	Seat	Kilometer
737-600	50.000	5.700
737-700	110.000	6.200
A321	80.000	5.700

Average kilometers per frequency, frequencies per month per aircraft were given below:

Aircraft	Average Km per Frequency	Frequencies per Month per Aircraft
737-600	4.500	150
737-700	5.500	180
A321	5.400	180

If you are planning fleet with top-down approach and you would like to have all your new fleet will be Boeing 737-600 how many numbers of Boeing 737-600 aircraft do you need?

If you are planning fleet with top-down approach and you would like to have equal number of Boeing 737-600 and Boeing 737-700 n your new fleet how many numbers of aircraft do you need from each type?

If you are planning fleet with top-down approach and you would like to have all your new fleet will be Boeing 737-600 how many numbers of Airbus A321 aircraft do you need?