4.5 hours
ten and a half
If they're both in the same day, then it's 71/4 hours.
1960
9 am to 4:15 pm is approximately 7 hours and 15 minutes.
7.25
8 hours and 15 minutes.
8 hours.
Nine and a half hours.
840
Nine hours.
4.5 hours
ten and a half
If they're both in the same day, then it's 71/4 hours.
8:30am to noon is 3.5 hours.
It is (8.5 + 24k) hours where k is an integer.
8 hours and 30 minutes.