Question

@kikuo

Answer 1

one thing about making ratios is that you have to be consistent i'll show you how

Answer 2

Like what you put on the top must be the same in both fractions it could be anything

\[\frac{ A }{ B } = \frac{ A }{ B }\]


\[\frac{ cds }{ price } = \frac{ cds }{ price }\]

Answer 3

so for example if we had like 10 cds cost 20 dollars how much would 50 cost?

You see what I did?

\[\frac{ 10~cds }{ 20~dollars } = \frac{ 50~cds }{ x~dollars }\]

Answer 4

Alright, so I already solved this problem so you don't have to explain it. I would just like to know how you know how to correctly setup proportions.

I'll refer to two problems.
http://prntscr.com/abm205
And the one you did with the yen money (can't screenshot it but you know what I'm talking about)
How did you know to set them up the way you did?

Also, alright, I'm listening.

Answer 5

10x=50x20

Answer 6

I'm pretty good at cross multiplying, but knowing where to put the numbers and the variable in the proportion setup to cross multiply keeps messing me up, and we haven't learned anything in class yet that addresses how to correctly set them up.

Answer 7

exactly

Answer 8

you know what you're doing. but you can set up a ratio however you want. just be sure that it's consistent.