Lots of things. Could you be more specific?
(1) ... up my mind whether or not this is a sensible question;
(2) 345 minutes.
Take your pick.
(20 hours 30 minutes) - (5 hours 45 minutes) = 14 hours 45 minutes.
4.75 hours or 4 hours, 45 minutes
5.75 hours = 5 hours and 45 minutes because 0.75 of an hour is 45 minutes
1 hour = 60 minutes, so 45 minutes = 45/60 hour ⇒ 7 hours 45 minutes = 7 + 45/60 hours = 7 + 3x15/4x15 hours = 7 + (3 ÷ 4) hours = 7.75 hours
2 hours and 45 minutes. 2:45
It takes approximately 45 minutes.
Saturn rotates every 10 hours, 45 minutes and 45 seconds
(20 hours 30 minutes) - (5 hours 45 minutes) = 14 hours 45 minutes.
4 hours 45 minutes
4.75 hours or 4 hours, 45 minutes
7 hours 45 minutes.
It will take about 15 hours and 45 minutes.
It takes 15 hours and 45 minutes
It takes around the 9 hours and 45 minutes.
This flight takes around the 3 hours and 45 minutes.
It takes approximately 2 hours 45 minutes.
It takes about 3 hours and 45 minutes.