If a 20-year-old woman wanted to calculate her target heart-rate range using 70-90 percent of her maximum heart rate,which of the following would represent her range?

Question

Quizplus · Accepted Answer

To calculate the heart-rate range using 70-90% of maximum heart rate, you need to first subtract your age from 220 to get your maximum heart rate. For a 20-year-old woman, this would be 200 bpm.

Next, multiply this number by 0.7 to get the lower end of the range: 200 x 0.7 = 140 bpm.

Then, multiply the maximum heart rate by 0.9 to get the upper end of the range: 200 x 0.9 = 180 bpm.

Therefore, the heart-rate range for a 20-year-old woman using 70-90% of her maximum heart rate is 140-180 bpm, which corresponds to choice C.

If a 20-Year-Old Woman Wanted to Calculate Her Target Heart-Rate