Oh honey, it's simple math. 2 hours is the same as 120 minutes, so you add that to the 45 minutes you already have to get 165 minutes total. Now, just slap that over 60 minutes in an hour and simplify it down to 11/4 or 2 3/4. Voila!
It is 45/1440.
It is 45/300, which can be simplified if required.
It is 45/60, which can be simplified, if required.
It is 3/5.
It is 3/4.
2hours 45 minutes
Fraction of one hour is 45 minutes is 0.750
45/1 minutes
It is 45/1440.
45 minutes is 45/60 hours.
It is 45/1440.
There are 60 minutes in an hour so 45 minutes is 45/60 = 3/4 of an hour.
180 minutes
2hours
It is 45/60, which can be simplified, if required.
It is 45/300, which can be simplified if required.
1\2