Question

the normal heart beat of man per minute

1. 60 to 80
2. 40to 60
3. 80 to 100
4. 45 to 90​

Answer 1

Answer:

1)60 to 80, the normal heart beat of man per minute is 72 per second..which means the answer must be option 1.

Answer 2

Answer:

2/6=1/3

Explanation:

Mark me as a brainliest answer