2 or 4.5 min.
270 minutes.
Thirty seconds is one half minute. Four minutes is the product of eight half minutes (8/2=4).
1 hour = 60 minutes → 4½ hours = 4.5 × 60 minutes = 270 minutes
1 and a half. There are one and a half minutes in one and a half minutes.
A bacteria splits in half after 20 minutes, so that after 20 minutes there are 2 bacteria, and after 40 minutes there are 4 bacteria. How many bacteria will there be after 2 hours?
There are exactly 4.5 minutes in 4 and a half minutes? Fascinating huh?
270 minutes.
270
Thirty seconds is one half minute. Four minutes is the product of eight half minutes (8/2=4).
1 hour = 60 minutes → 4½ hours = 4.5 × 60 minutes = 270 minutes
1 and a half. There are one and a half minutes in one and a half minutes.
A bacteria splits in half after 20 minutes, so that after 20 minutes there are 2 bacteria, and after 40 minutes there are 4 bacteria. How many bacteria will there be after 2 hours?
1.875 MILES IN 15 MINUTES
Four and a half hours is equivalent to 270 minutes. This is calculated by multiplying 4 hours by 60 minutes (240 minutes) and adding the additional 30 minutes from the half hour.
2.208 minutes.
There are 60 minutes in an hour and since "half an hour" is half of an hour, it will contain 30 minutes. Simply divide 60 by 2 to get the answer.
Ninety minutes are in an hour and a half