Question

Which ratio is equal?

Having trouble. http://prntscr.com/1576bc

Answer 1

16/20

Answer 2

Can you tell me why?

Answer 3

Sure, multiply both numerator and denominator by 4
:D

Answer 4

if you simplified 16/20, you would get what?

Answer 5

I usually use the cross multipliation method

4/5

Answer 6

so two answers are proportional if they simplify to the same fraction. Does that help?

Answer 7

I understand your method. But can you do it using the cross multiplication method so I can see how that works?

Answer 8

\[\frac{ 4 }{ 4 }* \frac{ 4 }{ 5 } = \frac{ 16 }{ 20 }\]

Answer 9

But-b-but shouldn't you be able to do it\[\frac{4}{5} = \frac{16}{20}\]

Answer 10

as 4/4 = 1, you are not changing your answer, only the factor by which it is being represented.

Answer 11

Butttt

\[\frac{4}{5} = \frac{16}{20} = 4 * 20 -- 16 * 5, 80 = 80\]

That's the cross multiplication way

Answer 12

I must not know what your problem is looking for; that information doesn't seem to be helpful for this problem