You can put this solution on YOUR website! Hello,
We can solve this with 2 equations. Let b represent boys and g for girls.
b + g = 80
g = b-10
Let's use substitution for this:
b + b - 10 =80
Add 10 to get:
2b=90
divide by 2:
b = 45
g = 35
Make sense?
RJ
www.math-unlock.com