1/48 day
It depends on 40 minutes as a fraction of what - an hour, day, week, etc.
It is: 80/(24*60) = 1/18 of a day
1\2
3/2
1+1 2
1/48 day
It depends on 40 minutes as a fraction of what - an hour, day, week, etc.
7 minutes is 7/1440ths of a day. 24 minutes is 1/60th of a day. 30 minutes is 1/48th of a day.
30 minutes is 1/4 of 2 hours
1/60
22/1440
It is 45/1440.
It depends of "as a fraction" of what? A day, a year, a century, a second - each of these will give a different answer.
It is: 30/1440 = 1/48 of a day
It is 180 minutes or, if you must, 180/1 minutes. If you want it as a fraction of some other quantity then you need to specify that second quantity. It should be blindingly obvious to anybody that 180 minutes, as a fraction of 1 day, will be quite different to 180 minutes as a fraction of a century!
30 minutes = 1/2 hour