ten and a half
8:00 to 0:00 = 4:00
0:00 to 6:30 = 6:30
4:00 + 6:30 = 10:30
10.5
8 hours
how many hours is 6:30pm to 6:30am
9.5
8pm to 7am is 11 hours.
From 8PM to 1PM (the next day) is 17 hours.
6am to 6pm is 12 hours. 6pm to 8pm is 2 hours. 12+2=14 6am to 8pm is 14 hours
11 hours
19 hours.
13
the answer is 12 hours.
20