Question

When she started walking, Jessica's heart rate was 180 beats in 1 minute. When she took her heart rate in the middle of the walk, it was 140 beats in 2 minutes. At the end of the walk, it was 240 beats in 3 minutes. Which of these three rates are equivalent?

A) 60 beats per minute
B) 70 beats per minute
C) 80 beats per minute
D) 90 beats per minute

Answer 1

To determine which of the three heart rates are equivalent, we need to convert each rate to beats per minute. The equivalent rates are 70 beats per minute and 80 beats per minute.

Step-by-step explanation:

To determine which of the three heart rates are equivalent, we need to simplify the rates to beats per minute. Let's convert each rate to beats per minute:

180 beats in 1 minute = 180 beats per minute

140 beats in 2 minutes = 70 beats per minute

240 beats in 3 minutes = 80 beats per minute

From these conversions, we can see that the equivalent rates are B) 70 beats per minute and C) 80 beats per minute.