Question

60. % of boys number of girls 400 number of boys and total number of students

Answer 1

Question:

In a school 60 percent of the students are boy and number of girls is 400.find number of the boys and total students in the school

Answer:

Total number of students in the school = 1000

Total number of boys in the school = 600

Step-by-step explanation:

Given:

Boys percentage = 60

Number of girls = 400

To Find:

Number of the boys= ?

Total students in the school = ?

Solution:

Let the Total number students in the school be x

Let the number of boys be y

60 percent of the students are boy , it can be written as

=> 60% of x = y--------------------------------------------(1)

Total number of students x is

=> 60% of x + 400 = x

=>
`((60)/(100) * x) + 400 = x`

=>
`(0.6 * x) + 400 = x`

=>x - 0.6x = 400

=>0.4x = 400

=>
`x= (400)/(0.4)`

=> x=1000----------------------------------------------(2)

So the total number of students is 1000

Substituting (2) in (1)

=> 60% of 1000 = y

=>
`(60)/(100) * 1000 = y`

=>
`0.6 * 1000 = y`

=> 600 = y