Question

The population of a village was 7000. If the males and females are increased by 7 % and 9 % . Then population will become 7522 after 1 year . Find the number of males at present

Answer 1

Step-by-step explanation:

Let the Number of Males At Present be $x$

So, the Number Of Females At Present = 7000 - $x$

New Male Population = $x$ + 7% $x$

                                    = 107%$x$

                                    = $\frac{107 [tex]x$ }{100}[/tex]

New Female Population = (7000 - $x$ )+ 9%(7000 -  $x$ )

                                        = $\frac{763000- 109x}{100}$

Total Population = Male Population + Female Population

                 7522 =  $\frac{107 [tex]x$ }{100}[/tex] + $\frac{763000- 109x}{100}$

                 7522 = $\frac{76300-2x}{100}$

            752200 = $763000 - 2x$

                     2x = 763000 - 752200

      $2x$ = 10800

       $x$  = 5400

     Number Of Male At Present = $x$  = 5400