Question

in a school there are 840 boys and 40% girls. Find the number of girls.

Answer 1

let the total no.of students be x
if the no of boys is 840 and % of boys is 60%
so 60% of x = 840
60x= 840×100
x = 84000/60
x = 1400
total student in school= 1400
no.of girls = total no.of students - no.of boys
1400-840
=560 girls
HOPE IT HELPS! ! !

Answer 2

let the total no. of student =x

so,

the boys are =840

and the girls =40%of x

=4x girls

total no. of students = girls+boys

x=4x+840

4x-x=840

3x=840

x=840/3

x=280

so,the girl is 280 in school

I hope this help you

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