Ratio box problems

[slyfox41]

I have a hard time doing Ratio problems. I triad sevral ways to get the problem below done. I traid doing 35x91 then deviding it by 100. And i triad 100x91 devided by 35. And none those worked. can you explain to me how to get it?


Here is the problem
Before the clowns arrived only 35 percent of the children wore happy faces. If 91 children did not wear happy faces, how many children were there in all?

 

[soroban]

Hello, slyfox41!

Before the clowns arrived only 35 percent of the children wore happy faces.
If 91 children did not wear happy faces, how many children were there in all?

If 35% wore happy faces, then the other 65% wore unhappy faces.

The ratio of Happy to Unhappy is: \(\displaystyle \:\frac{Happy}{Unhappy} \:=\:\frac{35}{65} \:=\:\frac{7}{13}\)

We are told that there were 91 Unhappy faces.

So we have: \(\displaystyle \L\:\frac{Happy}{91} \:=\:\frac{7}{13}\)

Can you finish it now?

 

[ophra]

hey ummm i dont understand that can i have some help i wanna undrstand that

 

[stapel]

hey ummm i dont understand that can i have some help i wanna undrstand that

Which part of the solution to the other student's question do you not understand?

Please be specific. Thank you.

Eliz.