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

User Pandora
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1 Answer

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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

User Syndog
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