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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

Sagot :

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%

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