1,800 seconds.
60s = 1min 1800s x (1min/60s) = 30min
690
2hrs. 30min.
about 7hrs and 30min
6 hours 30min
I think probably 30min.
On a Flip Mino HD 1GB = 30min.
4hrs. 30min. or 4.5hrs. or 4 1/2hrs.
It take 2 Hours by train and by coach 2hour and 30min
785 minutes, or 12 hours and 55 minutes.
30min
6hr 30min = 390min; 3hr 45min = 225min. 390 - 225 = 165min, or 2hr 45min.