30 minutes equal half an hour.
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30 minutes = half an hour, because 60 minutes are one hour.
90
Ninety minutes are in an hour and a half
There are 30 minutes in half an hour and 15 minutes in a quarter of an hour
An hour is equal to 60 minutes, so 150 minutes is equal to 2 and a half hours or 2 hours and 30 minutes.Two hours and thirty minutes, or two and a half hours, or 2.5 hours.