Question

HEYA!!
FRIENDS..
A school has the student population 700. The numbers of girls is 11.11℅ of number of boys..

HOW MANY GIRLS R IN THE SCHOOL...
✌️✌️✌️✌️✌️✌️

Answer 1

Let the number of boys in the school = 'x'.

Total population in the school is 700.

Given that number of girls is 11.11% of number of boys = 11.11% of x.

= > x + 11.11% of x = 700

= > x + (11.11/100) * x = 700

= > 100x + 11.11x = 70000

= > 111.11x = 70000

= > x = 70000/111.11

= > x = 630.

So, the number of boys = 630.

Now,

Number of girls = 11.11% of 630

= > 69.9

= > ~70.

Therefore, the number of girls = 70.

Hope this helps!

Answer 2

Let the no. of boys in the school be 'x'

so, no. of girls = 11.11 % of Boys
$= \frac{11.11}{100} \times x \\ 0.1111x$
Since, it is given that the number of students are 700

so,
$x + 0.1111x = 700 \\ multiplying \: by \: 10000 \: both \: sides \\ 10000x \: + \: 1111x = 7000000 \\ 11111x = 7000000 \\ x = \frac{7000000}{11111} \\ x = 630$

no. of boys = 630

$\therefore{no.\: of \:girls = 700 - 630}$

=> 70