Question

Distance between 2 airports 1,505 miles. Average speed of airplane 420 mph. Flight time hours

Answer 1

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.

Answer 2

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