Question

In a class of 55 students the number of girl is 5 by 6 times the number of boys find the number of boy and girl in the class

Answer 1

Solution -

Let the number of boys be x

So, the number of girls be 5x / 6

According to Question,

Given : Total number of students = 55

x + 5x / 6 = 55

⇒ (6x + 5x) / 6 = 55

⇒ 11x = 330

⇒ x = 330 / 11

⇒ x = 30

Number of -

Boys = x = 30

Girls = 5x / 6 = 5(30) / 6 = 150 / 6

= 25

Hence, there are 30 number of boys and 25 number of girls

#Be Brainly

Answer 2

let the number of girls are x

number of boys are 5x/6

According to the given question -

Given : Total students = 55

$x + \dfrac{5x}{6} = 55$

$\dfrac{6x + 5x}{6} = 55$

$\dfrac{11x}{6} = 55$

$11x = 6 \times 55$

$x = \dfrac{330}{11} = 33$

x = 33.

Hence :

Number of girls x = 30

$Number \: of \: boys = \dfrac{5x}{6} = \dfrac{5(30)}{6} = \dfrac{150}{6} = 25$