345 minutes.
There are 60 minutes in 1 hour. Plus 15 minutes in one fourth hour. Adding them together makes 75 minutes.
37.5 minutes
12
One hour = 60 minutes. Quarter hour = 15 minutes.Quarter [hour] to the hour = 15 minutes to the hour. OR start with the hour, say 1:00 PM. in fifteen minutes it will be a quarter after the hour. At thirty minutes it will be half past the hour. In forty five minutes it will be a quarter ( fifteen minutes) TO the next hour or a quarter to 2:00 PM.
345 minutes.
45 minutes..............two fourths is 30 and one fourth is 15....
One hour is 60 minutes, 3/4 hour is 45 minutes. So 60+45=105 minutes
There are 60 minutes in 1 hour. Plus 15 minutes in one fourth hour. Adding them together makes 75 minutes.
315 minutes
50 minutes.
37.5 minutes
Three quarters of an hour is forty-five minutes.
12
Five minutes is one twelveth of an hour.
23 (Twenty three)
300 minutes. 60 minutes in an hour times five hours so: 60 minutes x 5 hours = 300 minutes