Question

In a school there are 1200 students if % of boys in a school is 60% then find the number of girls

Answer 1

Answer:

Let number of boys be X and number of percent 60%

=> If 60% are boys in a school

than, 40% are girls in a school

=> Total amount of students =( x +1200)

60% of (x + 1200) is boys (x)

$\frac{60}{100} \times (x + 1200) = x$

$\frac{3}{5} (x + 1200) = x$

$3x + 3600 = 5x$

$2x = 3600$

$x = 1800$

Number of boys are 1800

Answer 2

Answer:

Let number of boys be X and number of percent 60%

=> If 60% are boys in a school

than, 40% are girls in a school

=> Total amount of students =( x +1200)

60% of (x + 1200) is boys (x)

\frac{60}{100} \times (x + 1200) = x

100

60

×(x+1200)=x

\frac{3}{5} (x + 1200) = x

5

3

(x+1200)=x

3x + 3600 = 5x3x+3600=5x

2x = 36002x=3600

x = 1800x=1800

Number of boys are 1800

hope it helps you ✌️