5 hrs, 15 mins
7.5 hours.
From 8:30 AM to 4:30 PM is a total of 8 hours. Subtracting the 40-minute lunch break, the total working time is 7 hours and 20 minutes.
610 min / 60 = 10.167 hours.
5 hours, 50 minutes
3 hours
7.5 hours.
8 hrs 30 min
8:30 to 5 is 8 and 1/2 hours no matter what you do for lunch.
5 minutes and 15 seconds.
0 hours are in 20 min an hour is 60 min
610 min / 60 = 10.167 hours.
8 hours, 20 minutes
2 hours
5 hours, 50 minutes
320 min = 51/3 hours = 5hours 20minutes
3 hours
1.95 hours.