0
Anonymous
If they're both on the same date, then
they mark a period of 21/2 hours.
Wiki User
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9 hours.
There are 8.5 hours. * hours and 30 minutes
3 pm is 15 hours, so 15-3 1/2 = 11 1/2 hours or 11:30 hours
NO
10 hours and 40 minutes.