There will be 133.33% increase of airplane passengers.
Step-by-step explanation:
Present value of passengers = 600
Expected value of passengers by 2020 = 1400
Increase = Expected value - present value
Increase = 1400 - 600 = 800
Increase percentage = 

There will be 133.33% increase of airplane passengers.
Keywords: percentage, division
Learn more about division at:
#LearnwithBrainly