Hey Guys,

For #25)

I am dealing with proportionals here with this problem and I don't know how to get the answer to this one.

I tried 10/8 = 4/x

AC/DE = AD/DB

I ended up getting x = 3.2 but the answer is 16

.

I have an idea that will get me 16 but... I honestly don't know if it's right

so I set up the equation as 10/4 = x/8 which gets me x =20

then I plug in 20 into x because DB = AB - AD and I get 20-4 = 16

But if I plug in numbers like this, I don't understand why I should set it up as AC / AD = DE / DB.