Respuesta :

For this case we have the following definition:
 d = v * t
 Where,
 d: distance
 v: speed
 t: time
 Clearing the time we have:
 t = d / v
 Substituting values:
 t = 1505/420
 t = 3,583 hours
 Answer:
 
Flight time hours:
 
t = 3,583 hours

The answer is 3.58. The speed is 420 so divide the total amount of miles (1,505) with the average speed (420) and you get 1505/420=3.58. So it'll take 3.58 hours.