There are 60 minutes in one hour, so to find the number of minutes in 13 and a half hours, you would multiply 13 by 60 and add half of 60. This gives you 13 x 60 + 30 = 810 minutes in 13 and a half hours.
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810 minutes.
a little over half a day
1 hour = 60 minutes 13 hours = 780 minutes.
78 minutes.
13 Hr,20 min13.33 hours