Question

Find the unit rate.

Roger's heart rate (82 beats per minute) for 30 seconds.

Answer 1

30 seconds = 1/2 of 60

82/2 - 41 beats in 30 seconds

Answer 2

So for this you would use 82 beats per 60 seconds.
82 beats/x=60 seconds/30seconds. just find x by cross multiplication and division. I got 41 beats per 30 seconds. I hope its not confusing