Question

5. 70% of the students in a school are boys and the number of girls is 504. find the number of boys in a school​

Answer 1

percentage of students which are boys =70 percent.

No of girl = 504

so , 30 % of girls are 504, so, for every 10 percent ,no of students = 504/3

= 168

so, 70% of boys = 168×7= 1,176.

So no. of boys = 1,176.

Step-by-step explanation:

pls mark BRAINLIEST

Answer 2

Answer:

Number of boys = 1176

Step-by-step explanation:

Given :

No. of girls = 504

Percentage of girls = 30%

Percentage of boys = 70%

(Here , taken 30% because 100%-70%=30%)

To find :

Number of boys

Taken :

To find the number of boys use this formula -:

$\boxed{\sf{N_{b}=\dfrac{P_{b}}{P_{g}}\:\times\:N_{g}}}$

Where,

$\sf{N_{b}}$=Number of boys

$\sf{N_{g}}$=Number of girls

$\sf{P_{b}}$=Percentage of boys

$\sf{P_{g}}$=Percentage of girls

Solution :

$:\implies\sf{N_{b}=\dfrac{70\%}{\cancel{30\%}}\times\cancel{504}}$

$:\implies\sf{N_{b}=70\%\times16.8}$

$:\implies\sf{N_{b}=1176}$

So , the number of boys are 1176 .