divide the seconds by 60.
seconds
Divide by 60, so 60 seconds turns out to be 1 minute.
You would use seconds.
60seconds/1minute 1min./60sec
To convert 250 seconds into minutes, which ratio could you multiply by?
1¾ min
90 seconds = 1.5 minutes. So the ratio is 1.5 : 3 or 1:2
The units in the denominator are minutes. Also, since you are asked to omit the number in the answer, the fact that there are 60 seconds in a minute is irrelevant.
seconds
5.25 minutes to seconds = 5.25 to 315 (5.25 : 315).
The units for the denominator is minutes. Also, since the number in the denominator is to be omitted, the number of seconds (in a minute) are totally irrelevant.
seconds per minute (secs.min^-1)(secs/min). 480 secs ------------------ = 8 mins 60 secs/min