Respuesta :

clarch19

Answer:

21,900 planes annually

Step-by-step explanation:

set up a ratio, # planes / time

150  =    x  

6 hrs     24 hrs

cross-multiply:  6x = 3600

                          x = 600; meaning 600 planes per day

multiply 600 by 365 days

21,900 planes over 365 days