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.
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
45% = 0.45 = 45/100 = 9/20