By writing the 45 minutes as a fraction of an hour. One hour is 60 minutes, so write the 45 over 60 and simplify.
Fraction of one hour is 45 minutes is 0.750
45/1 minutes
It is 45/1440.
0.75
It is 45/1440.
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!
45 minutes is 3/8 of two hours.
There are 60 minutes in an hour so 45 minutes is 45/60 = 3/4 of an hour.
To convert 1 hour 45 minutes to a fraction, you need to first convert the minutes to hours. Since there are 60 minutes in an hour, 45 minutes is equivalent to 45/60 = 3/4 hours. Therefore, 1 hour 45 minutes can be written as 1 + 3/4 = 1 3/4 hours. In fraction form, this is 7/4.
45/8, which cannot be simplified.
0.045 = 45/1000