Answer:
5.6 hours
Explanation:
Lets calculate a speed based on the flight information provided. The plane flew 2695 km in 3 hours and 30 minutes. Lets calculate its speed in km/hr.
(2695 km)/(3 hours and 30 minutes)
We need to convert 30 minutes into hours. Use the know definition of 1 hour 1 hr = 60 minutes. Now convert it into a conversion factor:
1 hr = 60 minutes
(1 hr)/(60 minutes) = 1
(30 minutes)*((1.5 hr)/(60 minutes) = (30/60) hours or 0.5 hours
We can now write:
(2695 km)/(3.5 hours) = 770 km/hr
To find the time required to travel 4312 km at the same speed:
(4312km)/(770 km/hr)
The km cancel and hr moves to the top:
(4312/770) hr = 5.6 hours