40% of the population of MWALENI VILLAGE is male. 25% of male population and 30% of female population are under 30.find the total % of the people in MWALENI VILLAGE who are under 30
we have that
40% of the population of MWALENI VILLAGE is male
that means
60% of the population of MWALENI VILLAGE is female (100-40=60%)
25% of male population and 30% of female population are under 30
so
25% of 40% -----> 0.25*40%=10%
and
30% of 60% -----> 0.30*60%=18%
therefore
total percentage under 30 is
10%+18%=28%