Question

40% of students In a class are girls if the number of girls is 150 then the number of boys in the school is

Answer 1

THANKS FOR THE QUESTION !

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GIVEN :

=> THEIR ARE 40% GIRLS IN THE CLASS

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NO. OF GIRLS :

=> 150

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TO FIND :

=> NO. OF BOYS

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LET,

=> THE NO. OF WHOLE STUDENTS IN THE CLASS :

=> 100X

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40% OF 100X

=> 40 / 100 * 100X

=> 40X

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FROM GIVEN INFO :

=> 40X = 150

=> X = 150 / 40

=> X = 3.75

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NO. OF BOYS :

=> NO. OF ALL STUDENTS - NO. OF GIRLS

=> 100X - 40X

=> 60X

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X = 3.75

=> 60X :

=> 60 * 3.75

=> 225

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HOPE IT WILL HELP U MATE .....

THANKS AGAIN......

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Answer 2

let us take the total number of students =x
then,
40x/100=2x/5
2x/5=150
2x=750
x=375
so, total number of students=375
number of boys=total no. of students-girls
=375-150
=225
therefore, no. of boys=225