Question

the number of boys in a school is 120 more than the girls if there are 980 students in the school find the number of boys in the school

Answer 1

let the no of girls be x
x+x+120=980
2x+120=980
2x=980-120
2x=860
x=860/2
x=430


= girls in school is 430
=boys in school = x+120
= 430+120
= 550

Answer 2

Hello,
we indicate the number of boys and girls with b and g.
we have that:
b=120+g and b+g=980
so:
120+g+g=980;
2g=980-120;
2g=860;
g=860/2=430 girls
then:
b=120+430=550 boys

In the school the number of boys is 550.

bye :-)