5 and a half
Eight and one half hours.
10:30 to 3:30 is five hours.
That is 2 hours and 1 hour = 60 minutes 2 x 60 = 120 minutes
1175
It is 4 hours.
18½ hours
9 hours and 30 minutes.
5 and a half
7
Eight and one half hours.
1230
10:30 to 3:30 is five hours.
337
830 930 1030 1130 1230 130 230 330 7 hours
That is 2 hours and 1 hour = 60 minutes 2 x 60 = 120 minutes
There are 8 hours 30 minutes between 3:30 pm and 12 am.