Question

In a class there are 35 students. the number of girls is two-fifth of the number of boys, then find the number of boys and girls in the class​

Answer 1

Answer:

Let the number of boys be x

number of girls = 2/5x

Total number of students = 35

Number of girls + number of boys = 35

=> 2/5x + x = 35

=>( 2x + 5x)/5 = 35

=> 7/5x = 35

=> x = 25

Number of girls = 2/5 * 25 = 10

Therefore there are 10 girls in the class.

4.4

Answer 2

Let the no. of boys = x

the no. of girls = (2/5)x

We know that,

Total no. of students = 35

No. of girls + No. of boys = 35

$i.e. \: \frac{2}{5}x + x = 35 \\ \frac{2x + 5x}{5} = 35 \\ 2x + 5x = 35 \times 5 \\ 7x = 175 \\ x = \frac{175}{5} \\ x = 25$

Therefore,

No. of boys = x

$= 25$

No. of girls

$= \frac{2}{5} x = \frac{2}{5} \times 25 = 2 \times 5 = 10$

HOPE THIS HELPS...

PLEASE MARK AS BRAINLIEST...

:)