Question

Doctors tested people of different ages to time how long it took between touching a sharp pin and the arm muscle contracting.
At each age they tested five men and calculated a mean value for the time.
The table shows the results.
How much longer does it take for the muscle to contract at 80 years of age compared to at 20 years of age?
Give your answer in seconds.

Answer 1

Answer:

Explanation:

I cannot answer your question because I cannot see the table given in the question, it is incomplete.