The triangles below are similar. Find the value of x. (the big triangle has two sides that say 21, and the bottom says 24. The small triangle has two sides that say 10.5, and the bottom is X)

this is from 2016 i wonder how old they r now

I said 12, and 12 is an option

I'm NOT getting any of the options.......

Doge probaly like 17 or 18

Now maybe you need to do this a more official way to really get it

21/24 = 10.5/x

we want to get the 24 and the x out of the bottom
so
multiply both sides by 24 x
24 x (21/24) = 24 x (10.5/x)

21 x = 24 * 10.5
x = 24 * (10.5/21)
x = 24 * (.5)
x = 12

Get it?

the is 10.5

The Options are-

14

12.5

13.5

12

21/24 = 10.5/x

well 10.5 is half of 21
and we all know 12 is half of 24
so
10.5/12

Yea