One hour is 60 minutes so one and a half hour is 60 + 30=90 minutes
15 min.
12 hour
30 minutes = half an hour, because 60 minutes are one hour.
There are 30 minutes in half an hour and 15 minutes in a quarter of an hour
One half of an hour.
One and a half hour is 90 minutes.
One and one half or One and a half
If you meant daly city, it is about an hour in a half.
One hour is 60 minutes so one and a half hour is 60 + 30=90 minutes
15 min.
Three and a half hours are 210 minutes. But what meant by "metric"? We still have 60 minutes for one hour.
My work will be completed in an hour and a half.
12 hour
30 minutes = half an hour, because 60 minutes are one hour.
There are 30 minutes in half an hour and 15 minutes in a quarter of an hour
A half hour is 30 min so there is two half hours in an hour