7am to 7pm is 12 hours 7pm to 11pm is 4 hours Add 12 and 4 and you will have the answer
i think 3 hours
There are 2+12k hours where k is an integer.
9
It is 16 hours.
12pm to 7pm is a span of 7 hours.
16 hours
6 hours
7am to 7pm is 12 hours 7pm to 11pm is 4 hours Add 12 and 4 and you will have the answer
11 hours
10
2 hours, so say it is 5 pm in England, in Greece, it will be 7pm.
4 hrs
6
1/2 hour less than 12 hours 11:30 = 19:00 - 07:30
There are 10+24k hours where k is any integer.
(84+168k) hours where k is an integer.