It will take: 20/4 = 5 hours
Five hours.
60 mins=1 hour 60x2=120 mins=2 hours 60 can't go into 20 mins, so it's 2 hours and 20 minutes (2 hr & 20 mins)
Approximately 11.3 hours... or 11 hours 20 minutes.
8 hours and 20 minutes = 8 + 20/60 hours = 81/3 hours = 8.33... recurring hours.
If you are referring to how long it takes to fly, it takes approximately 20 hours.
It will take: 20/4 = 5 hours
quite a long time...
3 hours 20 minutes.
3 hours and 20 Min. 3 hours and 20 Min.
20 hours
20 Hours
About 20 hours
18-20 hours
20 hours
20 hours
400 ÷ 20 = 20 hours (though it is unlikely that the speed would be constant!)