0
Anonymous
10 1/2 hours
7:00 to 7:00 = 12 hours
8:00 to 7:00 = 11 hours
8:30 to 7:00 = 10 1/2 hours
Wiki User
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840
Nine and a half hours.
Nine hours.
It is (8.5 + 24k) hours where k is an integer.
8:30am to noon is 3.5 hours.