in a city 35 of the population is composed migrants..., Percentage, General Mathematics

Question:In a city, `35%` of the population is composed of migrants,` 20%` of whom are from rural areas. Of the local population, `48%` is female while this figure for rural and  urban migrants is `30%` and `40%` respectively. If the total population of the city is `728400,` what is its female population ?

A `324138` 
B `349680` 
C `509940` 
D None

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+ AnswerD

+ ExplanationMigrants`= 35% of 728400`

`= 35/100 xx 728400`

`= 254940`.

Local population 

`= (728400 - 254940)`

`= 473460`

Rural population 

Urban population 

`= (254940 - 94692)`

`= 160248`

:. Female population

`= 48% of 473460 + 30% of 94692 + 40% of 160248`

`= (48/100 xx 473460 + 30/100 xx 94692 + 40/100 xx 160248)`

`= 227260.8 + 28407.6 + 64099.2`

`= 896660.

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