Am trying whether test my approach to this question is correct.
- There are 4,416 cities in the world, of which 125 are major cities.
- Assume 100 top airline companies operate in 125 major cities and each with have 2 airplanes (1 boeing + 1 airbus)= 25,000
- Assume 80% of the remaining 4,291 cities have access to terminal and only one airline is operating in each city = 3,432
- Total airplane flying in the sky tight now is 25,000 + 3,432= 28,432.
Could someone help me to verify this?