15 min.
One hour is 60 minutes so one and a half hour is 60 + 30=90 minutes
12 hour
30 minutes = half an hour, because 60 minutes are one hour.
One half of an hour is 30 minutes. This is because an hour consists of 60 minutes, and dividing that by two gives you 30.
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
One hour is 60 minutes so one and a half hour is 60 + 30=90 minutes
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
30 minutes
because 90 minutes =one and half hour
One hour is 60 minutes so 30 minutes is one-half of an hour.