Question

in order to achieve from aerobic exercise, one should maintain one's heart rate at a certain level. A fourty year old women with a reating heart beat of 80 beats per minue should keep her heart rate between 140 and 160 beats per minute while exercising. She checks her pulse for 10 sec while exercising. What should the number of beats be?

Answer 1

140 / 6 = ?
160 / 6 = ?

Answer 2

How much does an adult heart beat in one year, one month, thirty years, one week, ten years, and sixty five years