It is: 1/5 of 60 minutes = 12 minutes
Three hours and 12 minutes is 3.2 hours. 12 minutes is one fifth of an hour (60/12 = 5) and one fifth is 0.2.
One fifth plus one fifth is two fifths (2/5).
one fifth
Five hours out of a twenty four hour day would be 5/24, or just slightly over one fifth of a day (if a day had 25 hours instead of 24, then five hours would be exactly one fifth of a day). As a decimal, 5 hours is .208333... of a 24 hour day.
No, the plural form for 'man hour', the amount of work that one person can do in one hour, is man hours.
one and fifth of an hour
72 minutes
12 Minutes.
One-fifth of the tank
20/5=4 4 is one fifth of 20
72 mins: 60 divided by 5 (1 fifth) is 12 mins, there's 60 mins in and hour, 60 + 12 = 72
The same as you calculate the fraction of anything. For example, a fifth of an hour is one part out of five equal parts of a whole hour.
My work will be completed in an hour and a half.
The Babylonians thought it was a good idea. Helped by the fact that 60 is divisible by several small integers so that it is easy to work out a quarter of an hour or a fifth.
Three hours and 12 minutes is 3.2 hours. 12 minutes is one fifth of an hour (60/12 = 5) and one fifth is 0.2.
24 seconds
Usually one hour per hour.