How "long" it is depends upon what is happening or what you are doing during those 30 minutes.
But if someone tells you to sprint or do push-ups for 30 minutes, that might seem like forever (if you can even do it).
About 30 minutes
The average time is 15 - 30 minutes.
it takes about 30 or so minutes
Speed = distance/time so Time = distance/speed Time = 1/30 So it's 1/30th of 1 hour, 1 hour is 60 minutes so to get the time in minutes: 60/30 = 2 minutes
The time varies; but it can be from several minutes to 30 minutes or so.
It will take about 2 hours and 30 minutes.
The flight time is 1 hour, 30 minutes.
It will take about 1 hour and 30 minutes.
The flight time is 11 hours, 30 minutes.
The flight time is 1 hour, 30 minutes.
The distance is 12miles, journey time about 30 minutes
I don't really think Rachel Ray does time her cooking to 30 minutes long. I think that after they shoot the show, the editors clip out the parts that don't need to be shown until the whole show is 30 minutes long.