In general, at 55, you would need between 7 and 9 hours sleep for proper rest.
481,800 hours, 0 minutes, 0 seconds.
24 hours = 1 day 55 hours = 55/24 = 2.29 days (2 dp)
55 55
440/55 = 8 hours
55 hours = 3,300 minutes.
5 hours and 55 minutes is equal to 355 minutes.
There are: 55*60*60 = 198,000 seconds
55 hours a week.
55-56 hours
8 hours, 55 minutes
55 minutes at 60 mph