6 and 1/2 hours
6
Between 5 and 6 hours
6 to 6 and 1/2 hours
6 to 6 and 1/2 hours
approximately 6 1/2 hours.
2 hours 6 minutes
6 and 1/2 hours
between 6 and 6 and 1/2 hours
For 20-10 minuets and 2:00 hours
30
(11.5 + 24k) hours where k is an integer. 11 and 1/2 hours.