Question

If your friend's doctor wants her target heart rate range to be between 143 and 170, and her

average resting heart rate is 62, what is her age?

Answer 1

a person can work out 50% of the maximum (50% of 194 is 97) and 85% of the maximum (85% of 194 is 164.9). This means that the target heart rate for a 20-year-old is approximately 97–165 bpm.

Explanation:

so I'd say 21