7 hours
1.5 hours.
71/2 hours IF they're both in the same day.
935
No such time as 12 pm . It either 12 noon or 12 midnight. 'pm' are the initials for the Latin words ' post meridian', which in modern English means 'after noon'. If the time is 12 noon, or 12 midnight it is neither 'am' nor 'pm'. However, if you mean 12 noon to 2;00 am, the length of time is 14 hours. Also if the time is 12 midnight, then to 2;00am the time is 2 hours.
7 hours
8 hours.
1.5 hours.
7 hours and 30 minutes.
9 + 24k where k is an integer.
4 hours and 15 minutes.
7 and a half
71/2 hours IF they're both in the same day.
7.30am 8.20am 825am 830am 930am 935am 940am 1035am 1055am 11am 1200pm 1230pm 110pm 115pm 120pm 220pm 225pm 230pm 320pm
(20.75 - 9.5) hrs = 11.25 hrs = 11 hrs and 15 min
935
18.5 hours