150 minutes
2 or 4.5 min.
2 + 2.5 = 4.5 minutes = 270 seconds
There are 150 minutes in 2+1/2 hours; there are 60 minutes per hour.
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?
150 minutes.
1,314,871.915 minutes.
150 minutes
60
60 minutes in an hour; 30 minutes in a half hour. 5 and 1/2 = 330 minutes
2 + 2.5 = 4.5 minutes = 270 seconds
There are 150 minutes in 2+1/2 hours; there are 60 minutes per hour.
41/2 hours is 270 minutes.
150 seconds
there are 90 secs in 1 and 1/2 minutes
143 minutes, or almost 2 and a half hours
1 hour = 60 minutes, 1/2 hour = 30 minutes! Therefore 1 and a half hour would equal 90 minutes! Can't you add?