3/10
half of a sixtieth...
1/24 and 1/48, respectively.
1/120
It is 5/30, which can be simplified, if required.
Since a day has 24 hours, each hour is 1/24 of a day.
One hour is 60 minutes so 30 minutes is one-half of an hour.
1/2
30 minutes is half an hour (1/2 as a fraction. 0.5 as a decimal). Note, there are 60 minutes in 1 hour.
It is: 5/30 = 1/6 simplified
1/2 of an hour. 30 minutes.
There are 24 hours in a day. So there are 48 half-hours in a day. Therefore the answer is 1/48.
-- One hour = 60 minutes. -- A fraction of an hour is the same fraction of 60 minutes. -- To convert a fraction of an hour to minutes, multiply the fraction by 60 minutes.