0-14 years old
14% Yes
25% No
61% Maybe
15-30 years old
12% Yes
50% No
38% Maybe
31-60 years old
20% Yes
12% No
68% Maybe
60+ years old
10% Yes
80% No
10% Maybe
Total population = 132,000,000
I am trying to find out how many people of out the total population choose 'maybe'. May i know are there any Mathematical way to be able to find it?
No. From the data you have, (almost) all the people could be $0-14$ years, which gives one answer. They could also be $60+$ years, which gives a different one. You need to know the number or fraction of the people in each age bracket to answer the question.