SOLUTION: There are 63 kids. There are four girls for every three boys. How many Boys are there? There are 36 girls & 27 boys, but how do I show how I did it in my head?

Algebra.Com
Question 366259: There are 63 kids. There are four girls for every three boys. How many Boys are there? There are 36 girls & 27 boys, but how do I show how I did it in my head?
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
There are 63 kids. There are four girls for every three boys. How many Boys are there?
Equation:
Girls: 4x
Boys: 3x
Equation:
4x+3x = 63
7x=63
x = 9
---
Girls: 4x = 36
Boys: 3x = 27
==================
Cheers,
Stan H.





There are 36 girls & 27 boys, but how do I show how I did it in my head?

RELATED QUESTIONS

If there are 5 times as many boys as girls, how many girls are there if are 104... (answered by Fombitz)
There are 24 kids in Mrs Jones' class. There are twice as many girls as boys. How many... (answered by mananth)
There are 30 kids in a class and there are 3 girls for every 2 boys how many girls are in (answered by Ahmath)
At the swinging club there are 3 boys for every 4 girls. How many girls are there if... (answered by ikleyn,greenestamps)
At a local preschool there is a ratio of 3 boys to every 4 girls. If there are 245 kids... (answered by addingup)
There are 3 boys for every 2 girls in a class of 25. How many girls are... (answered by swincher4391)
There are 812 students in a school. There are 36 more girls than boys. How many girls are (answered by rfer)
in a chemistry class, there are 6 boys for every 1 girl. using the the ratio you set... (answered by lynnlo)
In a class of 400 out of every 9 boys there are 11 girls how many boys are there (answered by Alan3354)