Question

if 70% of the students in a school are boys and the number of girls is 540, find the number of boys in the school?

Answer 1

70/100x =boys
30/100x =540
on cross multiplication,
100*540/30=x
on solving
x= 1800
no. of boys = 70/100x
70/100*1800=1260 boys
Ans. the no. of boys in the school were 1260.
hope it helps you dear

Answer 2

Answer:

The Number of Boys is $\bold{1260.}$

Given that:

Boys = 70%

Girls = 540

To find:

Number of boys in the school

$\huge{\sf{\boxed{\boxed{Solution:}}}}$

Percentage of girls =

⇒ 100 - 70

⇒ 30%

Girls'percentage = 30%

Girls in numbers = 540

Let the total number of students be "y"

⇒ 30% of y = 540

⇒ 30/100 × y = 540

⇒ 30y = 540 × 100

⇒ 30y = 54000

⇒ y = 54000/30

⇒ y = 1800

Total Students = 1800

Number of boys =

⇒ 1800 - 540

⇒ 1260

Boys = 1260

∴ The Number of Boys is 1260.