One and one half or One and a half
One half hour.
A half hour is 30 min so there is two half hours in an hour
One half hour.
It's one and a half hours.
1.5 hours.
One Hour, Or Sixty Minutes.
one hour and a half (not on rush hours), on rush hours it can be 2-2 and a half hours
You have to know that there are 60 minutes in an hour. "2 and one half hours" = 2.5 hours (2.5 hours)*(60 minutes/hour) = 150 (hours*minutes/hour) = 150 minutes Note that you multiply & divide the units as if they were numbers. This is dimensional analysis.
1/2 hour 30 minutes 0.5 hours
Actually, generally when given a prescription like that, you'll take one on the spot, then the rest after the correct amount of time has passed. So in this case: Take 1 pill to start, then another every half hour. So all the pills will be taken in 1 hour. This theorectical question is sometimes used as a "brain teaser". 1 and a half hours
One day = 24 hours. So half an hour = 1/48 of a day.
about one half hour