About what percentage wo women experience hot flashes during menopause
1. 5%
2. 50%
3. 90%
4. 99%
My answer is 50%
I Googled "hot flashes during menopause" to get this information.
"Hot flashes are the most frequent symptoms of menopause and perimenopause. Hot flashes occur in more than two-thirds of North American women during perimenopause and almost all women with induced menopause or premature menopause."
You can check other sites, if you want.
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.