Question

If a/b = 4/5, complete this statement: 5/b = ___/___

Answer 1

@phi

Answer 2

if you have an equation like this, you can flip both sides to get
\[ \frac{b}{a} = \frac{5}{4} \]
that does not help for this question, but remember it.

also, you can write a ratio of top (left side) over top (of right side) = bottom (of left) over bottom of right

Answer 3

So does 5/b = 5/4?

Answer 4

so, for example, you can write
\[ \frac{a}{4} = \frac{b}{5} \]

5/b = 5/4? NO, you always keep the a,b,4, and 5. just how you write them can change

Answer 5

I'm still confused though :/

Answer 6

when you get time, see this
http://www.khanacademy.org/math/arithmetic/rates-and-ratios/ratios_and_proportions/v/introduction-to-ratios--new-hd-version

meanwhile, if you have
\[ \frac{a}{b}= \frac{4}{5} \]
you can also say top left (a) over top right (4) = bottom left (b) over bottom right (5)
\[ \frac{a}{4} = \frac{b}{5} \]

Answer 7

or we can flip them to get
\[ \frac{4}{a} = \frac{5}{b} \]

Answer 8

So would it be 4/5?

Answer 9

look at my last post. 5/b = what ?

Answer 10

I'm not sure :/ the only thing I can think of is 5/4

Answer 11

it would be 4/a

Answer 12

Oh..... well I feel stupid now :/

Answer 13

Here is one way to see the ways to write these ratios