Question

1. A city has a population of 1,20,000 out of it 30% are female, 50% are male and remaining are children. What percent are children and also find total number of males, females and children in the city,​

Answer 1

Answer:

Solution:

Given: Percentage of females = 30%

Percentage of males = 40%

Total percentage of females and males = 30 + 40 = 70%

Percentage of children = Total percentage – Percentage of males and females

= 100% – 70%

= 30%

Hence, 30% are children.

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Answer 2

Answer:

i) In a city, $20$% of population are children.

 ii) In a city, Number of males are $60000$, females are $36000$ and children are $24000$.

Step-by-step explanation:

Given : Total population of a city= $120000$

           Percentage of female = $30$%

           Percentage of male = $50$%

To find : What percent are children and also find total number of males, females and children in the city.

Solution :

• It is given that the total population of a city= $120000$

           Percentage of female = $30$%

           Percentage of male = $50$%

• We have to find i) % of children

              ii) Total number of males, females and children in the city.

• Now,  

        % of children = {Total population - (%of female+%of male)}

                            = {${100-(30+50)}$ }

                            = $100-80$

                            = $20$%

∴ In a city, $20$% of population are children.

• Now,

       Number of male = $50$% of total population

                               = $\frac{50}{100} *120000$

                               = $60000$

       Number of female = $30$% of total population

                                  = $\frac{30}{100} *120000$

                                  = $36000$

       Number of children = $20$% of total population

                                    = $\frac{20}{100} *120000$

                                    = $24000$

• ∴ i) In a city, $20$% of population are children.

        ii) In a city, Number of males are $60000$, females are $36000$ and children are $24000$.