Question

70% of students in a school are boys and number of girls are 504 find the number of boys in the school

Answer 1

Answer:

$\bold\red{1176\:boys}$

Step-by-step explanation:

Given ,

Percentage of boys in the school = 70%

Therefore,

the percentage of girls = 100 - 70 = 30%

Now,

It is given that,

Number of girls = 504

Let,

the total number of students be x.

Therefore,

we get,

30 % of x = 504

$= > \frac{30}{100} x = 504 \\ = > \frac{3}{10}x = 504 \\ \\ = > x = \frac{504 \times 10}{3} \\ \\ = > x = 168 \times 10 \\ \\ = > x = 1680$

Therefore,

Total number of students = 1680

Hence,

Number of boys = 1680 - 504 = 1176

Answer 2

Answer:

70% are boys

then,

100-70 which is 30% are girls

let total no. of students be x

Step-by-step explanation:

hence,

30% of x = 504

$\frac{30}{100}$

x = 504×100

_____

30

x = 1680 (total no. of students)

boys= 1680- 504

= 1176 boys