Assuming 9:30am to 1:30pm or pm to am, 4 hours, if am to am or pm to pm, it is 20 hours.
3
4-
4
830 930 1030 1130 1230 130 230 330 7 hours
12 hours
8
9h 15m
10 & 1/2
it is 1 hour 30 mins = 1½ hours.
1,139,555.66 hours.
2
130/60 = 13/6 = 2 and 1/6 hours or 2.16666 in decimal
1 hour = 60 minutes 130 / 60 = 2 hours 10 minutes
To find the answer, subtract 9:30 from 11:40. The answer is 2 hours and 10 minutes.
12 p.m to 9:30 p.m is 10 hours and 30 minutes......... :)