Question

Samantha is four years older than Perla.

Karla is twice as old as Samantha. The sum
of their ages is 36. How old is Karla?

Answer 1

(X+4)+x+2(x+4)=36
X+4+x+2x+8=36
4x+12=36
4x=24
X=6


(X+4)=Samantha
X=perla
2(x+4)=Karla

Plug in x into 2(x+4)
2(6+4)
2(10)
20

So Karla is 20

Answer 2

Karla would be 20 years old